Despite the fact McGregor has never boxed professionally and Mayweather has officially retired, this proposed fight is one of the most talked about and hyped feuds in both boxing and UFC. Of course some of the talk is about ridiculing both fighters given their different professional backgrounds, but there is no doubt it's one the public want to see and would break all PPV TV audience records.

Given that both fighters refuse to scorch the rumors, and even seem to add fuel to the fire each time they make a public appearance, many online betting sites have gone ahead and priced up odds for the clash, should it ever take place.

It's not surprising that Mayweather is the overwhelming favorite with the bookies at odds as short as 1/10 with the likes of Betfair and Ladbrokes. As a result of Mayweather's heavy favoritism, McGregor to win is odds of 9/1 with William Hill. Whilst this suggests that the bookies don't give the UFC fighter a chance, it's worth remembering that the Irishman's odds are actually shorter than some of Mayweather's recent boxing opponents, including in his last fight against Andre Berto.

Many UFC experts believe that McGregor has a better chance than what the bookies are giving him. The former five weight division champion has been inactive in the ring for sometime, and this rustiness could prove to be his floor against the UFC fighter who is most definitely in peak condition.
However, boxing experts argue that McGregor doesn't stand a chance against the pound for pound king who never suffered a professional defeat. The UFC fighter doesn't have the footwork, timing or accuracy to breakdown Mayweather's famous defensive displays.

Of course, there are a number of stumbling blocks that could prevent this mega fight from ever taking place. In the meantime, you can bet all MMA betting markets at William Hill, including all the major bouts at UFC 208, 209 and 210.