As I've said before he's bust status.
He's just not a very good defender, no composure, poor anticipation and is not comfortable with the ball.
Why buy a defender that isn't good at defending let alone all the other things that are required at a top club? The mind boggles and he really should be put out of his misery, isn't not suited for a top team whatsoever.
Why the fuck is he playing over Holding? Who is undoubtedly the better defender?