The WBC seem to make the rules up as they go so you never know!
I'm afraid I have no idea. It'd just be interesting to see what would happen if Joshua had all the other belts and was the mandatory for Wilder's. They'd have to at least try and make the fight as as I understand it he can only...
If Whyte doesn't fight AJ next it means Joshua is fighting either Wilder or Fury. In that case I'd like to see Whyte fight whichever of the Wilder or Fury isn't fighting Joshua. Or worse case scenario BReazle so that he's mandatory for pretty much everything.
If Wilder ducks AJ it would be...