The WBO have appointed Usyk to the 'Super Champion' status, he can therefore move up one weight class and be mandatory for AJ, essentially forcing the fight.
I'm not sure who would be the tougher fight for Usyk between AJ and Wilder.
AJ has good fundamentals, and has improved a lot, but I'm not sure he'd easily knock Usyk out. Usyk has a good work rate and stamina, so could trouble AJ late if he lasts that long.
Wilder is technically rather poor, and Usyk could outbox him, but he can knock anyone out with one hit. He has good stamina too, and he's massive at 6'7.
The only guy that I'd very confidently pick to beat Usyk is Fury.
I'm not sure who would be the tougher fight for Usyk between AJ and Wilder.
AJ has good fundamentals, and has improved a lot, but I'm not sure he'd easily knock Usyk out. Usyk has a good work rate and stamina, so could trouble AJ late if he lasts that long.
Wilder is technically rather poor, and Usyk could outbox him, but he can knock anyone out with one hit. He has good stamina too, and he's massive at 6'7.
The only guy that I'd very confidently pick to beat Usyk is Fury.