There has never been more scrutiny over Jose Mourinho's tactics. Defeats against Newcastle and Tottenham have led to doubts over how he has set Manchester United up.
Then there is the eternal Paul Pogba question, carried around the Portuguese's shoulders like an albatross. How do you get the best out of the flash but extremely talented midfielder?
The criticism has not been severe but it could be after Sevilla. On Wednesday night, he needs to get his formation right. And there is enough reason to believe a change may be on the cards.