I'd be surprised if he didn't sign up as a part of his initial deal, especially if we paid as much as is rumoured (125k wasn't it?) in his "loan with a view to permanent". But the fact that it's gone quiet on that and this hasn't been confirmed since promotion must mean that there is a doubt about that happening.
I would keep him because he's young, "one of our own" with unfinished business and I do think he can play at Championship level as he's done a job there and at L1 before. He's still working his way back from injury setbacks and undoubtedly has potential-as Grendel often points out in match threads by way of comparison to Biamou, he clearly has ability. However....I would sit him down with the video of the Brighton FA Cup game and tell him that I want to see THAT passion and determination every week, because if he's on his game he's capable of causing top flight defences real problems. But he lost his place to Biamou deservedly and has to stop sulking and show what he is capable of a lot more often.