No idea how good he is defensively, but he has played his fair share of football, even this season, as a left back. This weekend for example.
From the small amount I know about him, it would seem he's an extremely talented kid, who can blitz people on the outside with his speed, decent close control and skill, and a wicked left foot. I'm sure he'd have a lot to learn tactically if he came here, even though he has said himself he has improved out of all recognition since he came to Europe in that respect, but simply because of the massive step-up in quality he'd take time to adjust.
