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The summer focus falls mainly on the incomings at Melwood, but the training ground should be fitted with a revolving door.

As Jurgen Klopp manages his squad and looks to strengthen and enhance it, he will also keep its size at a manageable level with outgoings.

Indeed, last season proved that. Part of the club’s positive net spend was due to the German boss selling some squad players, accepting they would be surplus in a campaign without European competition.

Seven who featured under Klopp in 2015/16 moved elsewhere for fees, with a further three leaving on free transfers.

It is unlikely similar will happen this summer, with only Alberto Moreno an obvious first-team squad member on borrowed time at the club.

Questions persist over the likes of Daniel Sturridge, Lucas Leiva and Kevin Stewart, but widespread sales are not anticipated.

Still, it leads to the question: just how well did Liverpool sell last summer?

Here is a rundown of 10 players and whether the moves worked out – for both the club and the player.

Christian Benteke (Crystal Palace, £27.5million)

What happened? Liverpool decided to part with the previous summer’s most expensive signing after the affable Belgian was found to be unsuited to Klopp’s style.

Did it work out for Liverpool? They received nearly £30million for a player who would have been an option from the bench at best – but there is a lingering feeling he would have proven useful in the winter particularly. No player was breaking up the foursome of Philippe Coutinho, Adam Lallana, Sadio Mane and Roberto Firmino when fit, but Benteke would have provided a good alternative.

Did it work out for Benteke? Though Palace struggled, changing manager half way through the season and only confirming safety in the penultimate game of the season, Benteke had a good season. Underrated, even, with his contributions in front of goal – his 15 goals represented his second-best league haul in English football.

Jordon Ibe (Bournemouth, £15million)

What happened? After his potential went unfulfilled, Liverpool opted to take a generous offer from Bournemouth for the young winger.

Did it work out for Liverpool? There would be a temptation to say no, given the lack of width they suffered in the absence of Mane. But he had such a poor season on the South Coast, taking the money was certainly the more favourable choice.

Did it work out for Ibe? Not really. He was expected to reignite his career under Eddie Howe, but the Cherries boss publicly called his record signing a “disappointment” following an FA Cup defeat to Millwall. He would start just 13 league games, two in 2017, scoring no goals.

Joe Allen (Stoke, £12million)

What happened? After a stunning Euro 2016 for Wales, there was a hope Liverpool would opt to retain the midfielder. But with chances limited, and with just a year left on his deal, he headed to Stoke.

Did it work out for Liverpool? Allen was not of the sufficient quality to allow his contract to run down, so selling him was the right decision. That said, given Jordan Henderson and Lallana missed crucial parts of the season, his experience and ball retention would have been an asset.

Did it work out for Allen? On a personal level, definitely. Given a more advanced role of heightened importance, he was one of the Potters’ best performers. He was an unlikely source of goals earlier in the campaign, scoring four by October, but ended the season with just a further two. Stoke, meanwhile, could only finish 13th.

Martin Skrtel (Fenerbahce, £5million)

What happened? One of the club’s most loyal servants, his time at Anfield came to an end under Klopp after some fairly poor performances. The writing was on the wall when he started just four games after a nightmare showing against Watford in December 2015.

Did it work out for Liverpool? The defensive set-up was criticised by many throughout the season, but Skrtel would not have improved it. Good business from the Reds.

Did it work out for Skrtel? In an easier league, Skrtel has thrived – and even scored an amazing solo goal in March against Konyaspor. He has started 30 league games in Turkey as his side look to finish third.

Tiago Ilori (Reading, £3.5million)

What happened? Ilori finally made his debut for Liverpool in January 2016, two-and-a-half years after signing for £7million. In January, having made just three appearances and with Championship side Reading bidding for him, the Reds decided to cash in.

Did it work out for Liverpool? Definitely. The centre-back never looked like a first-team prospect in his three FA Cup outings for Klopp, and Liverpool were well-stocked in defence this season. He was nothing more than an Under-23s player by the end of his time on Merseyside.

Did it work out for Ilori? He has struggled for minutes in Berkshire, making seven league appearances and starting just three. That said, he has recently come into the team, and played the 90 minutes in their play-off semi-final win over Fulham last week. Jaap Stam’s side could be promoted on Monday, and he could be heading to the Premier League.

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Luis Alberto (Lazio, £4million)

What happened? His underwhelming debut season of 2013/14 proved to be his only one at Anfield, with the Spaniard spending time on loan with Malaga and Deportivo, before being snapped up this summer to play in Serie A.

Did it work out for Liverpool? Undoubtedly. Alberto was never going to be an option for Klopp at Liverpool, so recouping some of what the Reds paid Sevilla was a bonus.

Did it work out for Alberto? Lazio have done well and look set for a fourth-placed finish, but it has little to do with the 24-year-old. Just four league starts overall with one goal, and he might be heading elsewhere next season.

Brad Smith (Bournemouth, £3million)

What happened? The Australian left back made a breakthrough under Klopp in 2015/16, making nine league appearances, but the possibility of bringing in an eventual £6million for his services was too tempting to turn down.

Did it work out for Liverpool? Would he have been a better option than Alberto Moreno this season? Klopp quickly relegated the Spaniard to the bench as James Milner became first-choice left back, but Smith would have realistically been behind both in the pecking order.

Did it work out for Smith? Not really, making just three starts for the Cherries in the Premier League, and featuring for a total of 270 minutes.

Mario Balotelli (Nice, free)

What happened? After years of trying to offload him, and a short while on the US tour this season, the Reds finally managed it – on a free transfer – to French club Nice.

Did it work out for Liverpool? Yes. He was out of their hair and off their wage bill.

Did it work out for Balotelli? Yes. He scored 15 league goals for the first time in his career as Nice finished third. The Italian was also out of Liverpool, which he described as “the worst decision of my life” back in September.

Joao Carlos Teixeira (Porto, free)

What happened? Seen as a real prospect after signing from Sporting as a teenager, Teixeira’s contract would run down, allowing him to move back to Portugal with Porto.

Did it work out for Liverpool? Despite the belief Teixeira was primed for greatness, he is now 24 and is nowhere of the level of Liverpool’s other forwards. He is no real loss.

Did it work out for Teixeira? Eight appearances for Porto in the league – all as substitute and amounting to 72 minutes – suggests not. His career is at a crossroads.

Kolo Toure (Celtic, free)

What happened? Arguably Liverpool’s best player in his final game – the Europa League final against Sevilla – the Ivorian left Anfield a cult hero after the club decided not to renew his contract. He reunited with the man who brought him to Merseyside, Brendan Rodgers, at Celtic.

Did it work out for Liverpool? His experience was missed at times, but he would not have featured much on the pitch. Centre-half is not a position the Reds have been light on this season, and he’s now 36.

Did it work out for Toure? He didn’t feature much under Rodgers, making just nine appearances in the league. He did, however, predict his new club would go unbeaten all season – and Celtic did just that, romping to the Scottish Premiership after 34 wins and four draws.

Others who departed: Sergi Canos, Jerome Sinclair, Jose Enrique, Jordan Rossiter