Floyd Mayweather Says He’ll Rematch Conor McGregor After Khabib Fight

Floyd Mayweather says he ain’t done with Conor McGregor — telling TMZ Sports he’ll give the Irishman a rematch in the boxing ring right after he tunes up Khabib Nurmagomdov.  “McGregor was talking that sh*t, so it ain’t over,” Floyd told us…