Im surprised this is not being mentioned more. When Kev plays he plays as a second striker in a 4-4-2 this means everything then usually has to go through Kev. Mahrez and and Foden/Grealish now have to play as wide wingers rather than inside forwards, this is why they rarely have touches in the box, Haaland becomes isolated. Bernardo and Rodri have to play deeper to stop transitions.
However crazy it sounds, we play better without him, the free role he has is a detriment to the team, he needs an extended break on the bench. Bernardo, Rodri, Gundogan should be the midfield for next games.