Nothing to do with him being an ex Bayern player. He and his contribution is just so damn overrated on here. He's here since 2017 and hasn't done much at all. The biggest argument pro Costa always is "but if he is fit..." But if he is in form..." - which is almost never the case.
i could see the criticism regarding his injury proneness but when the guy is fit his pace and dribbling ability offer something different, something nobody else in the team even comes close to
He did two assist and he still fit so thats good. Today he lost so many time the balls, did two awesome passes besides the assistance, so I would say it was a good game, a solid 6, but somes here and in the live thread were talking like a 9-10 performance and I didn't see it at all