He's borderline. His decision-making isn't great atm. Could go the way of Sturridge (not to say Sturridge is finished, but his progress has stalled lately because he's such a greedy git).
Exactly why Wenger has pulled him back.... he's simply not ready yet mentally for the top level the physical and technical tools are there but the mental is lacking atm.
I think it will come though, might be wrong but get the feeling he has a bit more about him than some of his peers.