He really isn't far off the "if", I think that's the thing. He's apparently being coached to play at "80% speed" so he isn't just running down the wing and doing nothing - it shows with his stats this season, too, that he's improving. Against us, where he was doubled up on and pushed out the game really, he was basically a couple of seconds off causing us huge problems. If he starts to see those passes into space that players leave behind to double/triple up on him, he'll be ridiculously good.
(I noted he's taking their corners too, so obviously working on that delivery).