Floyd Mayweather v Conor McGregor: Ricky Hatton, Lennox Lewis and more boxing stars deliver verdict on Las Vegas mega-fight

Floyd Mayweather and Conor McGregor will clash in Las Vegas on August 26 in a boxing match billed as the 'biggest fight ever'. 

Mayweather is an undefeated former multi-weight world champion and widely considered the finest boxer of his generation.

McGregor is a mixed martial arts superstar but has never boxed professionally before, making him a big outsider.

But could the Irishman - who at 28 is 12 years younger than his American opponent - upset the odds?

Hear the thoughts of a host of former boxing world champions - Amir Khan, Ricky Hatton, Lennox Lewis and Kell Brook - on talkSPORT ahead of the big fight.