I've been impressed everytime I've seen him. The stats suggest he's one of the better players in the league as well:
12th in the league in successful dribbles,
1st in total distance he's moved the ball while controlling it with his feet towards the opponent's goal,
8th in expected assists,
2nd in key passes,
3rd in passes into the penalty area,
13th in amount of progressive passes,
2nd in shot creating actions (passes, dribbles, drawing fouls) ...
Didn't know about the possible character issues though. Either way I don't think we'd be able to afford him, just wanted to say I think he's good. Clear level above the rest of the players on the pitch yesterday.