Floyd Mayweather has said that Conor McGregor is extremely heavy at the moment and only has a matter days to lose the weight or he will be paying millions in a fine.

Mayweather will not disappoint fans and cancel the fight, yet he will look to punish McGregor by taking millions away from him.

Mayweather said in an interview with FightHype.com that he believes McGregor currently weighs 164 pounds, which is well above the 154-pound limit for Saturday's fight - and doesn't believe he'll be able to lose those 10 pounds in time

“Conor McGregor is EXTREMELY heavy right now, extremely heavy," Mayweather said.

"I think he's 164, so he's still got 10 pounds to go, you go get that extra money if you can't make the weight, get them extra millions ready Dana, somebody got to pay a fine.

"He got to get that weight down like a true champion, a true champion is discipline, and very responsible.

"I don't think he gonna make the weight, even if he do make the weight, that's even better.

"But if he don't make the weight, we still gonna fight but it's going to be a heavy fine — get me that money."

It is very likely, however, that Mayweather simply has no idea what McGregor currently weighs, and is just adding a bit more spice and anticipation to the eagerly awaited weigh-in, which will take place on Friday.

Yet, no matter what McGregor weighs, there is no doubt he will be the underdog going into this contest.

He has never been in a boxing match in his life, and is going up against the greatest boxer of the modern era.

Former World Cruiserweight Champion Tony Bellew said: "It's an embarrassment to boxing that people think someone who has never stepped foot inside a boxing ring can beat one of if the not the greatest pound for pound fighter of all time."

Yet, McGregor has constantly proved people wrong at every stage of his career, and his biggest strength is arguably his self belief.

He knows he has many doubters, yet this will only fire him up and he's going to try on Saturday to prove all those doubters wrong once again.