My biggest issue with him is that he and the team don't play to his own strengths.
He's good defensively, got a tidy touch, decent enough passing and crossing and strong pace. Why the hell when someone passes the ball into his feet is he not passing and moving, he's not got the nous to dribble so is easy to stop. Also why the hell does he take so many shots.
To me it indicates he doesn't have a picture in his mind or has a selfishness that is unhelpful to his own cause. He really needs to up his awareness and team play.