I would imagine Beterbiev is on his way out if he loses against Bivol. That would make Bivol king of the division. We got Benavidez & Morrell in there now and I believe both Munguia and Berlanga have expressed interest in moving up to 175. Canelo also seemingly wants to go back up to 175 although only to rematch Bivol.
Beterbiev will unify and defend against Benavidez before dropping all the belts and moving up to CW or retiring After that it will be Bivol and everyone else trying to grab all the belts