I am concerned about Kovacic, if I'm honest - when fit, which isn't often enough, he just doesn't look anywhere near as good as we were told. It's one thing to take a year to bed into Pep's system, but this is very different. A player who is meant to be famously good on the ball has been our worst player on the ball.
It's possible that Chelsea under Tuchel and Potter was just so awful that they thought every player who could kind of control a ball was 'world class'.