Amir Khan may fight 'unbeaten Mayweather on May 3 at Las Vegas

British boxer Amir Khan is reportedly set to take on unbeaten American champion Floyd Mayweather Jr. in their long-awaited showdown at the MGM Grand in Las Vegas on May 3 this year.

A deal has been agreed for Khan to fight Mayweather in the mega-money bout and Khan has already signed his end of the deal - which will net him around 3.5million pounds -while Mayweather is expected to sign his side of the contract following his return to the United States from a promotional trip to South Africa.

According to the Mirror, the fight is set to be confirmed around the time of next weekend's Super Bowl in New York and will be promoted by Golden Boy Promotions along with Mayweather and Khan's own companies.

The report mentioned that Mayweather holds the WBC's light-middleweight and welterweight titles, with the fight, which is likely to take place in the heavier division, to be a tough test for Khan, who has fought only once at welterweight, and also because Mayweather is acknowledged as the best pound-for-pound fighter on the planet.

Another factor that will not make the challenge any easier for Khan is the fact he will not have fought for 13 months by the time he steps into the ring in the Nevada desert, the report added.