The whole thing as it stands is so stupid because the rules are in favour of boxing only. For it to be a fair contest, McGregor should be allowed some MMA skills like his leg kicks and Mayweather should learn to do that in the same way that McGregor will be training to hone just his boxing. That way the skill level is more balanced. McGregor can kick great but box good, and Mayweather can box great and maybe kick quite good. But then, Mayweather is only coming out of retirement to do this on his own terms.