Disgraceful from Kepa. He should never get a sniff of first team football at Chelsea again, and I hope no other noteworthy club wants him after that. That's inexcusable. Doesn't matter what you think of the manager, you don't refuse to come off. That's unheard-of. If things are so dire at Chelsea that the players are this disloyal, they should have sacked Sarri already. The fact that he's still the manager means players are contractually obliged to do as told.
I wouldn't be surprised if Kepa's contract is terminated after this, but it may not because it's hard to see how Sarri will keep his job. Open mutiny on the fecking pitch is hard to recover from. The "correct" outcome of this is farewell to both Sarri and Kepa, but it's the manager that I feel bad for. It's clear that something is deeply wrong at Chelsea and has been for years. It's an unmanageable club. Can't stand them so it doesn't cost me any sleep, but it's embarrassing on behalf of English football.