Edit: Apart from the McLean part!
He hasn't really produced anything that has convinced me otherwise this season. Work rate isn't everything, which is pretty obvious, he doesn't seem to make many killer runs that cut defenders up. Maybe it's the target man role that he has had to adopt which isn't the role a player of his stature should be playing at this level as he gets muscled off the ball far to easily or over complicates the play with too many touches.