I heard he has another boxing fight booked soon on the undercard of David Haye vs Tony Bellew, I really don't think he's going to come back to MMA anytime soon. I think he has one more fight on his Bellator deal, I would love to see him fight Doug Lima in Bellator. Rory and Koreshekov would definitely take MVP down and smother him but Doug Lima is mostly a stand up fighter and I think that would be one hell of a striking match.
I really don't think his heart is in MMA, I'm sure if he had the desire (and or ability) to be a star in MMA that Scott Coker would be hyping the shit out of him to get ratings and more exposure for the company, but you can't hype someone up and sell them to the fans if he won't take fights, you can't be a star without beating top guys.