Reading the comments above, I think some people might be focusing on the wrong areas of his game.
First off, it'd be great if people stopped comparing him to bloody Giggs and the two Ronaldos. Those are 3 of the most exciting, and effective, players I've ever seen. Then there's Gareth Bale... ok, he's Welsh and quick... can we stop though?
People have automatically jumped to counterattacking and balls over the top, and others are talking about his close control at speed.
This is a £15m 21y/o kid from the Championship. What I'd expect from him is a high work rate, playing at a high tempo. Pressing to win the ball back, and then the ability to keep it. The fact that he can be an out ball on the right (the one we usually find Ashley Young in atm) is great too, and his amazing pace will make him easier to hit. He's exactly the sort of player that can help others around him play their game. Individually he can be dangerous, with that one superpower... but Premier League teams can usually cover that approach. I really hope our fans keep their expectations measured. If they do, we might have a squad player here who makes a real contribution for years to come.