Mayweather has signed on the dotted to line and the showdown is set to take place at the MGM Grand in Las Vegas.

The undefeated 32-year-old American said: "This one is definitely for the fans.

"I wasn't going to waste anyone's time with a meaningless tune-up bout and I asked to fight Shane immediately.

"I have said ever since I came back to the sport that I only wanted to fight the best.

"I think Shane is one of the best but come May 1 he still won't be great enough to beat me."

Mayweather's clash was originally expected to go head-to-head with Manny Pacquiao's WBO welterweight title defence against Joshua Clottey, which is scheduled for March 13.

But fight fans can rest easy as the change of date still leaves the door open for Money to face the Filipino in a blockbuster bout before the end of the year.

Mosley, 38, has lost just five times in an impressive 52-fight career.

And the man known as Sugar is confident he can inflict the first defeat of Mayweather's career.

He said: "I have always wanted to fight Floyd and now it is finally coming true.

"I am already in great shape and ready to show everyone on May 1 that I am stronger, faster and better than he is.

"I will have no problem beating him."

The Sun