In baseball, the rule is: three strikes and you're out. It will be interesting to see if the same applies at Tottenham Hotspur this summer when it comes to the case of Serge Aurier.
Aurier has appeared to be a lockdown liability. Sure, at the same time as his first alleged violation manager Jose Mourinho seemed to be breaking the rules himself by holding a coaching session.
But Mourinho apologised – and learned. Aurier said sorry, then proceeded to break the rules again, it seemed, by training with Moussa Sissoko. Then the pair made a donation to the NHS, apologised.