beat Myweather, he doesn't fight, so what you mean is outpoint in a Morse code tap fest, Kahn at 147 is the only one with the reach and speed to possibly outpoint this guy.
ggg fight isnt realistic tho. the only fighter i can take seriously beatin floyd is keith thurman khan at 147 has looked impressive but his chin is suspect but maybe the extra weight added on helps his chin. cuz i dont think he was all that healthy fightin at lower weight i think he was weight drained n there for his chin was weak. but no matter wut that left hook danny garcia put on him woulda ko'd any version of khan
Khan has speed and reach but is completely open to a counter puncher like floyd. He also has 0 ring IQ and would be an easy nights work for Floyd
There are many fighters who beat Floyd in the past and can beat him in the future. The problem is his judges will always rule in his favor regardless of the course of the fight, once again evident from the last fight.
