He has had 3 appearances because every time he has played he has been nothing short of dire and produced nothing.
He could do well at Stoke. If he performs as he has done at Schalke then he will not. Pace without the ability to produce something of quality counts for very little.
He runs very fast. If they can coach into him a bit of composure once he gets there and a better head for decision making then he will be some player.