I imagine he will negotiate with Hearn so that PBC stays honest rather than knowing they are mostly bidding against themselves.
If he cares about his legacy it’ll have to be PBC. Just beating Shawn Porter has done a lot for the perception of his career. If you add in at least 2 of the other WWs(Danny, Ugas, Thurman, Spence) or even going to 154 and fighting their undisputed champion, history will be favorable towards his career.
If he want to be consider an ATG then he must go with Golden Boy Promotion(Spence is there btw). It's a win-win situation for them.
He will sign with pbc trying to get the Spence fight but haymon will keep him away from Spence anyway and just age him out and hope someone else takes him out for Spence. Spence is too important for PBC to let him fight Crawford while Crawford is still a threat.