I think he is overestimating what he has done so far.

Will he retire? I doubt it.

Even if he destroys ODLH, it's not enough to cement the legacy he has been after.
He will be required to fight Mosley at 147 after ODLH to have a shot at getting
back his WW title that he vacated to take the ODLH fight.
IF PBF beats ODLH he should most definately take the Mosley fight at 147.
Good follow-up fight.