Not sure what it is, but apart from like 2 or 3 sub appearances, he has been really poor all season. Looked pretty slow, weak, lacking ideas, lingers too much on the ball, constantly picking the wrong decision, and just complete void of confidence. Hopefully he improves next season because he was class last year and looked very creative and hard to handle for teams, and it wasn't just because the rest were shite. Definitely think it would have been better for him if he didn't go to the world cup at all because I think all the stardom might have gone to his head after last season, breaking in the team, being so good for us, and then going to the world cup at 19. This season he's just looked like he was disappointed at not being a starter and never properly recovered.
Also it's not that he's had a lack of games... It's the way those games are spread out which is the problem. He'd have a run of like 6 starts, then be out of the team for months. If he got a start here and there, but constant subs so he makes appearances in most games, he'd be a lot better off IMO. I doubt he has been working his ass off in training though, because he would play more if he was.