At Ryan Giggs’s house there are no visible pointers to a two-decade career at Manchester United, nothing to remind him of the things he did.

‘If you did that Through the Keyhole programme at my house you wouldn’t know I had played,’ he smiled. ‘It’s all in my head instead, in my memories.’

Now, as we approach the final furlong of another football season, it’s time for those memories to be jogged.

As we approach the furlong of the football season, Ryan Giggs reflects on his treble in 1999

Manchester United won the Premier League, FA Cup and the Champions League 20 years ago

In May, it will be two decades since Giggs and United put indelible ticks in three very big boxes at the same time. Champions League, Premier League and FA Cup. The Treble. Never done before and never done since.

Reflecting from a distance of 20 years on epic victories over Arsenal in the FA Cup and Bayern Munich at the Nou Camp seems strange. Giggs does not look 20 years older, for example. He is 45 but carries no extra weight, the only nod to middle age being a few grey flecks and a stiffness in his neck that he stretches as he talks.

‘I am really proud of the Treble now,’ he nodded last week. ‘I understood what it meant at the time because it was so hard to do. It was such a roller coaster. But I can reflect on it properly now.

‘In London a cabbie will say, “You ruined my life that night at Villa Park”. United fans tell me my goal that night was the best they ever saw. Arsenal fans say they haven’t forgiven me.’

If it still hurts in north London, one can only imagine how Giggs, Ole Gunnar Solskjaer, Teddy Sheringham and the rest are remembered in Bavaria.

Giggs celebrates after scoring a stunning winning goal for Manchester United against Arsenal

The winger dribbled beyond several defenders before firing home past David Seaman

One of the most memorable weeks of Giggs’s remarkable career was shaped by two interventions from Sir Alex Ferguson. The first one, on April 7 1999, was an old- fashioned rollicking as United trailed 1-0 at half-time of their Champions League semi-final first leg at home to Juventus.

Ferguson tore into Giggs and David Beckham, claiming they weren’t working hard enough. In the last minute of the game, Giggs scored the equaliser.

Five days later, as United prepared for what proved to be a seismic FA Cup semi-final replay against Arsenal at Villa Park, Giggs found himself in Ferguson’s office.

‘He told me I wasn’t playing how he wanted,’ said Giggs. ‘The boss said he wanted me to remember what I was good at, that I had drifted away from that.

‘He was saying, “I need THIS Ryan Giggs, not THAT Ryan Giggs”. I got the hump about it of course. I always did. But I listened. He just wanted me to run at players, be instinctive.’

Giggs recalls receiving a rollicking from Sir Alex Ferguson as United trailed 1-0 to Juventus

The Manchester United star went on to score a last-minute equaliser in the semi-final first leg

The upshot was one of the greatest goals in FA Cup history, Giggs slicing a 60-yard gash in the Arsenal defence to score the winner of a titanic game in extra time. A substitute that night, he hadn’t even played very well. ‘I kept giving the ball away,’ he said. ‘So I went back to instinct. I ran. At the time I thought the goal was OK. Only later did I realise how far out I was when I got the ball.

‘Roy Keane was sitting in the dressing room when I got in. He said, “Here he is, the f****** saviour”. The other lads were celebrating but because it was the winner, not because it was a worldie.’

Arsene Wenger’s Arsenal side had won the Double the previous season and started 1998-99 by beating United 3-0 in the Charity Shield and the Premier League.

‘One trophy, never mind three, seemed a very long way away at that point,’ recalled Giggs. ‘We were under pressure.’

United’s rivalry with Arsenal ran deep. Deeper perhaps than we even realised. ‘I didn’t like Arsenal,’ Giggs said without blinking. ‘I didn’t like Vieira ’cos he was dirty and got away with murder. I didn’t like Petit because he had long hair. I didn’t like Bergkamp.

‘I didn’t like Pires even though when you meet him now he’s actually dead nice. I wouldn’t even look at them, didn’t know them and didn’t want to. I wouldn’t allow myself to rate any of them.

Arsene Wenger’s side had won the Double the previous season and put United under pressure

‘Berkgamp? Nah, I told myself he wasn’t as good as Eric Cantona. I wasn’t really that kind of person. It wasn’t really me. But you had to get that in your head, that intense dislike. It was pure motivation. But deep down we knew. They were top drawer and that rivalry was everything to us. Deeper even than Liverpool at that time.’

United won the Premier League by a point from Arsenal, having not lost a single game in any competition since December 19.

But their relationship with their London rivals was at its most visceral that night in Birmingham in the Cup. Keane described his battle with Petit and Vieira as ‘a war’ and was sent off. Bergkamp missed a penalty in the last minute of normal time. Yet afterwards Tony Adams and Lee Dixon waited by the United dressing room to offer congratulations.

‘I don’t know if I could have done that,’ said Giggs. ‘I really don’t...’

The game was ultimately won by goals from Beckham and Giggs. This was fitting given that Beckham had also been called in for a little gee-up by his manager the previous week. Great man-management or lucky coincidence?

‘It’s hard to say but he regularly picked me and Becks out for a rollicking,’ said Giggs. ‘I think it was because he knew we wouldn’t sulk for long and he would get a reaction on the pitch.

Giggs told himself that Eric Cantona (left) was a better player than Arsenal's Denis Bergkamp

‘But he was making an example of us too, definitely. We always got it more often than the rest. One pre-season in America he went for me in front of everyone. I was fuming and pulled him later.

‘He said it was a ploy because he knew the younger players would know that if he could have a go at me then nobody was safe. At times I would moan to the lads about it but when I got on the pitch it probably made me play better. Sir Alex knew what he was doing with me and Becks, pressing our buttons. Was he wrong? Course he wasn’t.’

United’s return to European eminence had been a slow-burn. For some — Keane among them — the legacy of the 1968 European Cup-winning team weighed heavily. For others, like Cantona, the wait for Continental glory simply went on too long.

It was Cantona who, at occasional midday drinking sessions at the Bull’s Head in Hale, had told the attendant Giggs and Gary Neville two seasons earlier that they were good enough to win the Champions League. They didn’t always believe him.

Neville, for example, thought it a task ‘as high as Everest’ and 10 minutes from the end of the final in Barcelona, United were still in the foothills. Cantona was long gone, retired prematurely after the 1997 campaign ended in semi-final defeat, but it transpired that United had other saviours against Bayern.

Keane has said the first time he saw Solskjaer at United’s training ground in 1996 he thought he was a teenage fan. Giggs’ memories are equally vivid. ‘I remember the first shooting practice we had,’ recalled Giggs. ‘I had never heard of the guy but I was like, “f****** hell, who is this?”.

‘I told my mates I had just trained with the new Shearer.’

United needed something special that night in Spain. Leggy after their jousts with Arsenal and missing the suspended Keane and Paul Scholes, they trailed Bayern by a goal deep into a poor game.

'I didn’t like (Emmanuel) Petit because he had long hair. I didn’t like Bergkamp,' Giggs admits

Giggs played on the right with Beckham moved to the centre. Giggs has for years feigned indifference but admits now he felt slighted. ‘There is a bit of me — and I don’t think I have said this before — that felt I should have been playing centre mid,’ he said.

‘It was between me and Becks and I felt I could have affected it more. I was a little bit, “I am in the wrong position here”. But that’s no excuse. We knew we could make history or fail and with 10 minutes to go I just thought it was gone. Nightmare.

‘I always used to say that we would get one chance but in that one we were that bad there was just nothing. I was definitely drifting off a little bit in my mind. I knew I would have to face my mates and I wondered if I would ever be there again.’

Ferguson maintains that Giggs’ constant running at Bayern left back Michael Tarnat was one of the reasons the Germans succumbed, exhausted, to United’s unlikely late charge.

‘I did as he asked,’ said the current Wales manager. ‘I kept going at Tarnat but kept losing the ball. To be honest, I was s*** that night.’

Giggs had scored the first goal of United’s European season, in an August qualifier against LKS Lodz. Now, 287 days, 62 games and 27 United European goals later, he swung his foot at a ball on the edge of the penalty area. He has rarely struck a ball less well. It was a shank. But Teddy Sheringham turned that shank into the goal to equalise. Two minutes later, Solskjaer struck from a corner to win the game.

Years later, former United defender Rio Ferdinand described his first day at the club three summers after the Treble win. Miscontrolling a ball fired at him deliberately hard by Keane, a voice chirped up. ‘Is this all you get for £30million these days?’ It was Solskjaer.

Giggs thought with 10 minutes to go in the Champions League final that the chance had gone

‘See, he’s not the nicest bloke in the world like people say he is and that’s because we rubbed off on him,’ smiled Giggs.

‘Ole was the nicest guy in the world until we got hold of him. When you got in that environment with us it was a tough school and you changed. You had to. That day with Rio we were just testing a new player and if Ole hadn’t said it then someone else would have. That’s what it was like. Every day. It helped us to win.’

A strange footnote to that night in Barcelona is this. Before the start of that season, United agreed to sell Solskjaer to Tottenham for £5.5m. The Norwegian said no.

Superlatives have been attached to Giggs all of his professional life. He was the first player Ferguson greeted on the field at the final whistle at the Nou Camp and the last one he mentions in his 480-page autobiography, writing: ‘I used him as the challenge to all the others.’

Neville, meanwhile, wrote of four great cornerstones of the modern United. Busby, Charlton, Ferguson and Giggs. Not Best or Robson or Cantona or Ronaldo. But Giggs.

Once all this would have made Giggs uncomfortable. Now, less so. His sporting heart still beats to the rhythm of the collective but he appreciates exactly what he did.

The former Red Devils man was the last person Ferguson mentioned in his autobiography

‘Look,’ he said. ‘To be separated like that from all the other great United players... for me that’s hard to say it’s right. But I will say this. United was my life, nothing else.

‘At training I was the one who would be in yoga two hours after it finished. I was the one standing up for people and kicking people if they weren’t doing it. I tried to set the example. I would lead the attacking press in training and turn round and go nuts if nobody had followed me. So I have given a lot to the club, everything I possibly could.’

Mostly it was appreciated and just occasionally it wasn’t. The player Sir Bobby Charlton said ‘made me catch my breath’ claims he never received a single offer to leave United.

‘Nobody else wanted me,’ Giggs laughed. But that’s not to say it was always a given that he would remain a one-club man.

For Giggs, season 2002-03 was particularly difficult. Struggling for form, he was booed by his own supporters. ‘We were in Amsterdam pre-season and it was Carlos Queiroz’s first as coach,’ he recalled. ‘He comes to my room. I have known him a week. He says, “Where is the world-famous Ryan Giggs I have seen on TV?”. I am like, “who the f*** is this?”. Then the penny dropped. The manager had sent him.

‘It was tough. The season before I had been only OK. I was transferring from winger to midfielder.

‘Then early 2003 against Blackburn in the League Cup I get taken off and it started: the boos and the jeers. It did hurt a bit. They were our fans. I had grown up with them. But I was quite critical of myself and knew I hadn’t been great.

Giggs lifted the trophy after late goals from Teddy Sheringham and Ole Gunnar Solskjaer

‘The manager was really good with me at that time but that was the only time — because of the fan and media reaction — that I thought I could be in trouble at the end of the season. It ended up with Becks being the one to go. I don’t know how close it was to being me instead but it felt like it could have been.’

Europe provided salvation once more that season. Juventus again. United won 3-0 in Turin in February 2003 and Giggs scored twice. He also scored the decisive penalty in their Champions League shoot-out win over Chelsea in 2008.

But nothing can really equal the Treble of 1999. Of the 34 trophies Giggs won at Old Trafford, those three are arguably the most significant.

This season a problem looms large. Pep Guardiola’s Manchester City are still in all four major competitions. Would it matter if they won a Treble, too?

‘Yes,’ said Giggs. ‘We are the only people to have done it and we want it to stay that way. I always said I would rather City win the League than Liverpool but if Liverpool can stop them winning the Treble, I might have to rethink that.’