Not sure I agree with you there really. You have to remember he's only 21, he's had to recover from a terrible leg-break and is used to playing passing football in that Arsenal team. A loan move could be what he needs to regain some confidence to a club where he isn't under so much pressure. The only criticism you could have is that he is guilty of slowing the play down, especially on counter attacks but even Adam is guilty of that sometimes!
I think you would be silly to write off a player of his age who has 1 goal in 4 for Wales as well. Would be a top signing IMO.