I don't think he is far from getting over the attitude thing, the guy is 19, he is still a teen, it will pass.
And I think he would be used as a LW, which, IMO, he would surely be good enough for.
He hasn't been as important as last year for Lille so far this season. he had some problems at the start of the season, als been benched a few times but the last 4-5 matches, he has been improving and slowely returning to the form he had last season.
So far this season he has 3 goals and 1...
His dream is La Liga, especially Real but Real clearly isn't in need of a winger, with Kaka returning, they have more then plenty options there.
Let's hope Marotta shows interest in him next summer.