Qwiss he's a very good defender, clearly a CB but good to keep him sharp in case.
We've looked better with him in there than with Zinchenko tbh. More solid defensively, and now we aren't forcing him inside, he doesn't dwell on the ball and lose it. Zinchenko when he plays it seems like everyone is giving him the ball and he is travelling everywhere on the pitch to get it even though it leave so much space in behind.