I have done a pretty long post on this so will try not to repeat myself (it's on this page or the last) but while I agree he has talent, he's not standout at anything. He's not an amazing passer, he hasn't got an incredible shot on him, he's not rapid, he's not an amazing dribbler.
What he was very, very adapt at was finding space behind the lines and getting onto the end of things. He had - and maybe still has - a great appreciation of space. And it's why he was so brilliant when he first came onto the scene in that Poch system.
Now, I think attitude plays it's part, certainly. I don't think he's a bad egg but do think he's lost his confidence/way and part of that is working under some poor managers in recent years.