When you lose a player like Thiago, a drop in team performance is expected if not adequately replaced. Though this might just be down to post-quintuple syndrome.
Regardless Bayern imo should be in the market for a midfielder who can control the game. Kimmich is great, however I'd keep him in his more natural position.
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Im trying to think of a player who fits the mold that I described above, but none come to mind. Crazy how much of a drop off there's been in that role. From the previous generation right away I can think of Pirlo, Xavi, Xabi Alonso, Schweinsteiger, Marchisio, Busquets, Modric, De Rossi and there's def a few more.
Today aside from Thiago, Pjanic and Kroos who is there? Jordan Henderson? Rodrigo?