I've had a bit of time to think it through. Obviously I'm completely clutching at straws.... If Rudiger is fit, and Frank has told Luiz that he prefers Rudi & Christensen and Zouma as first choice, then he's thrown his toys out and needs to calm down. We'll need Luiz over a long, gruelling season. Apparently he did train, but not with the first team, so I'd assume he's not first choice for Sunday, so had a paddy.

Edit: Conceded goals from corners every game pre-season bar one, I think.