Crawford by middle/late tko. amir would probably win the first 3 -4 -5 rounds though. but same thing that happened vs canelo once he slows down he would be hit on his jaw and goodnight .
I liked Khan at 140 and he would have his moments against Crawford, but after 3-4 rounds when Khan gasses he'll get timed and stopped.
Khan uses his expert technical skills, Mayweather-type boxing IQ, Duran-esque infighting polish, and Hagler-like chin to win a UD.