Fight night may be fast approaching. But for Floyd Mayweather and Conor McGregor, the time for talking is far from over.

The unbeaten American boxer and Irish UFC star will collide in Las Vegas on August 26 in a much-anticipated and money-spinning showdown.

With both fighters brash, outspoken, and unfailingly confident, the build-up promises to be explosive. Ahead of a week of pre-fight press conferences, Sportsmail answers all the key questions.

Conor McGregor and Floyd Mayweather will come face-to-face for a publicity tour this week

The two fighters will collide in a money-spinning cross-over bout in Las Vegas on August 26

How has training been going for both fighters?

With six weeks to go before fight night, McGregor and Mayweather will be mid-way through gruelling training camps on separate sides of the Atlantic.

The 40-year-old American rarely allows filming of his sparring sessions, so only snippets of footage have emerged from his 'Doghouse' gym in Las Vegas. But 'Money' rarely strays from his fighting weight and he has been sharing the ring with the likes of American prospect Devin Haney ahead of fight night.

McGregor, meanwhile, has posted numerous photos of his training camp in Dublin. The UFC star has been sparring with fighters such as Tiernan Bradley as he looks to make the necessary adjustments from fighting in the octagon to the squared-circle.

'Money' Mayweather, who rarely strays far from his fighting weight, trains at his Las Vegas gym

McGregor has been posting regular photos of his gruelling camp with trainer John Kavanagh

What have the camps been saying in recent weeks?

Mayweather is rarely short of something to say. The American tends to dominate the build up to big fights with his bravado and brash predictions. But it has been McGregor's camp who have been doing most of the talking in recent weeks.

The UFC star channeled his inner-Ivan Drago in a recent Instagram post, captioning a training video with the catchphrase: 'If he dies, he dies'.

His trainer John Kavanagh also said earlier this month: '(Conor’s) scarily focused… I really feel we’ve come leaps and bounds in a short time'.

Mayweather couldn't resist taunting his opponent while partying alongside Tyron Woodley last month, however, claiming that the American rather than McGregor is the best fighter in UFC.

McGregor's cornerman Kavanagh claims the Irishman is 'scarily focused' ahead of fight night

How good a boxer is McGregor?

Rumours of McGregor's achievements in the ring have been circling for months. But one fact remains: August 26 will be the Irishman's first professional fight.

The 28-year-old first put on a pair of gloves at Crumlin ABC in Dublin under the tutelage of Phil Sutcliffe. He rubbished rumours that a young McGregor was once national champion, telling the BBC the UFC star 'didn't give himself the chance' to win such titles.

He said: 'It's everyone's dream to go to the Olympics games for most boxers and to represent their country. That's the dream we try to build them to and Conor could have been one of those kids. But he was into a few things - Jiu Jitsu, grappling - he wanted the whole picture... he would have been a fantastic boxer.'

McGregor's first coach Phil Sutcliffe claims the Irish star 'would have been a fantastic boxer'

Will Mayweather's age catch up with him?

By the time he enters the ring for the 50th time as a professional, Floyd Mayweather will be only six months shy of his 41st birthday.

Wladimir Klitschko proved against Anthony Joshua that fighters can still compete at the top level into their fifth decade. But for Mayweather, a fighter who relies on lightning hand-speed and reactions, every passing year presents particular challenges.

'I'm not the same fighter I was 20 years ago, I'm not the same fighter I was 10 years ago... As a matter of fact, I'm not the same fighter I was 5 years ago,' he recently admitted. Before retiring in 2015 Mayweather showed his ring-craft, gained through years of experience, could help compensate for his loss of speed. But will Father Time eventually have his day?

At 40 years old, can Mayweather reclaim the mastery he showed to defeat Manny Pacquiao?

What else have they been up to?

Though they are deep into camp ahead of the Vegas showdown, both Mayweather and McGregor are determined to enjoy some downtime ahead of August 26.

Alongsde his promotional duties, Mayweather recently opened his own strip club in his adopted home town. He and protege Gervonta Davis spent one evening last week delivering pizzas to 'Girl Collection', while the 40-year-old also recently took his kids to watch basketball and attended the BET Awards in Los Angeles.

McGregor, meanwhile, has been spending some of his down time playing chess in the lead up to the fight. The Irish UFC star also seems determined to enjoy the fruits of his labour and recently posed for pictures alongside his £105,000 BMW i8.

The Irish UFC fighter has been playing chess ahead of the Las Vegas showdown on August 26

'Money' has been enjoying down time, too, taking son Koraun and daughter Jirah to basketball

What has everybody else been saying about the fight?

'McGregor has no chance in this fight. In fact, it could be very boring... there is no way he will be able to land a meaningful punch on Floyd. How could he? He has no professional experience in boxing.' - Manny Pacquiao

'I think McGregor will knock him out inside the first 35 seconds like he did to Jose Aldo, to be honest...I think McGregor will do him in one round. Come on McGregor...It would be good for boxing if McGregor chinned him.' - Tyson Fury

'It's ridiculous to me... You are talking about one discipline where you can use only your hands and only a few can do it. Every battle sport always starts with your hands, but they are two totally different sports.' - Lennox Lewis

This is not for fighters, but business...I think people understand what is a true fight, a boxing fight, like mine with Canelo (Alvarez), or a big show, maybe sometimes for people a funny show, like a circus show' - Gennady Golovkin

Mayweather's former foe Pacquiao said McGregor has 'no chance' in the Las Vegas showdown

What happens between now and August 26?

McGregor and Mayweather will come together for a press tour this week to sell a fight that hardly needs more publicity.

The two fighters will then retreat into camp, where they will aim to be in peak condition come fight night through a combination of sparring, running, pad work and strict dieting. McGregor, for example, is set to go through 44 fights-worth of sparring against the likes of ex-two time world champion Paulie Malignaggi.

Come fight week, they and the boxing world will descend on Las Vegas for a final press conference, the weigh-in and their date with destiny.

Ahead of fight night McGregor is set to spar former world champion Paulie Malignaggi (right)

How much money will the fight generate?

Most boxers have to wait years before their fight purses contain six figures, let alone seven. But Conor McGregor isn't like most debutants in the ring. The Irish UFC star is expected to receive a £62million fight purse for his clash with Mayweather, with the American taking home £78m.

The two fighters will then take a share of the revenue generated by sponsorship, merchandise and PPV buys. In total, the fight is expected to be worth £470m, just shy of 'Money's' super-fight with Manny Pacquiao, but enough to make it one of the richest fights in history.

The Irish UFC star is set to take a eye-watering fight purse of £62million for his boxing debut

What's at stake for both fighters?

For McGregor, this fight represents the chance to shock the world. Few outside his committed support base give him anything more than a puncher's chance and victory would mark by far the biggest achievement of his already-illustrious career.

His underdog status means that defeat would likely do little to harm his reputation or unwavering self-belief. For Mayweather, meanwhile, the situation could hardly be more different. Though victory would be expected, it would see him eclipse Rocky Marciano and reach 50-0. Defeat, on the other hand, would be embarrassing and likely cause irreparable damage his ring legacy.

What do the bookmakers think?

Mayweather is, as expected, the heavy favourite. The unbeaten American is as much as 1/8 on to win the fight and 4/6 on to knock the Irishman out with many bookies.

McGregor, meanwhile is around 5/1 to win the fight and as wide as 40/1 to win on points.