This is a fair point. As I mention in one of my earlier posts, have never seen him play, and certainly there are concerns about him, which is the reason he might fall to us (or lower).
I agree that lack of motor is different than lack of maturity. Whether the former can also improve with time (or only in a contract year), I don't really know. I do think though, that sometimes, particularly in a young player, using them right can make a difference. Not saying this might happen with him, but some players shall play harder if the coaches consciously involve them, and tend to drift otherwise.
Does that raise major red flags about him, or mark him as high maintenance? Yes. I guess if the FO and coaching staff feel they can get through to him, and the potential compensates the risk, they might pick him (assuming he's available of course). If we skip on him, and he blows up somewhere else, it shall be a blunder for the ages though.