Understandable, he's an unconventional wide player who's involvement in the game a lot of times cannot be observed easily, he's not the best dribbler, or an exceptional scorer or someone overly creative, but an all round player like him ends up influencing the game heavily. It's a great advantage having someone who will commit himself to defending and provide enough work rate and responsibility while at the same time being a dangerous attacking threat, specially his touch and go and then that rocket of a shot. As a keeper or a defender you have to constantly watch out for such players and it disrupts your concentration. Also he himself never knew which one was his strongest foot, adds loads of versatility to his game which again is valuable to have. Again, though, it's easy to understand why his greatness isn't 'apparent' as others. He's a great fit for a 442 that
@Balu and
@crappycraperson are playing, did the same in the Euro draft and loved having him there. The crux of it is balance.