That's because he's working on keeping his jaw clenched. He doesn't wanna get in the habbit of opening that thing too wide or else his mandible might end up on the canvas once again.
He just did a 30 min interview with BT sports and he said that he's in training getting a head start and will know within the next 3-4 days whats going on with May-Pac by Al haymon so he can get a fight signed.