I don't know if he's unhappy at the club, or just got an attitude problem, but watch his reaction when Doyle comes to congratulate him for scoring against Barnet. (It's around 0.59 in the video) I'm surprised nobody has commented on this before.

https://www.youtube.com/watch?v=4dL8OW_C0qM

There's a very good player in there somewhere but we see it far too infrequently.