Floyd Mayweather Jr has reportedly told popstar Justin Bieber that he will not be allowed to lead him out for his fight against Manny Pacquiao in Las Vegas this Saturday.

The controversial singer has been by Mayweather's side for previous fights, but the undefeated boxer reportedly wants the spotlight to be focused purely on him for the fight dubbed the biggest of the century.

According to the Daily Star, Mayweather has told Bieber that he can still be part of his entourage, but will have to walk behind the fighter's trainers and relatives at the MGM Grand Garden Arena.

Mayweather is favourite to beat Pacquiao this weekend due to his undefeated 47 bouts, while his Filipino opponent has lost five out of his 64 fights.