I did think there was a period in the first half where he was starting to understand the league better. That little dribble and ball to Riviere is the sort thing he can do. Just seemed to lose whatever confidence he may have had, after half an hour or so.
His style of dribbling is interesting. His best work comes when he receives the ball at pace and then commits players or when wriggling through a crowd. It's all about drawing players in and using his footwork to get around them. However, when the onus is on him to speed the play up then he's not so good as he lacks the necessary acceleration. In a ponderous set up like ours, he's not well suited.
Ironically, I think going 4-4-2 and having a striker that can combine with him in the channels would help his game.