Erik ten Hag has already laid down the law at Manchester United - having dropped a player as punishment for twice turning up late to team meetings.
The Dutchman was handed the reins at Old Trafford this summer and is attempting to reverse the fortunes at the club following a thoroughly miserable season under at first Ole Gunnar Solskjaer and then Ralf Rangnick last term.
The first stage of that has been introducing strict discipline within the squad ahead of his first season in charge and thus far, it appears that most have brought into the new rules. Having said that, not all have managed to get up to speed yet.