A discipline or concentration problem?
Since Mikel Arteta's first game as Arsenal manager on 26 December 2019, the Gunners have had 18 red cards.
That is five more than any other team in that time period.
So do Arsenal have a discipline issue following William Saliba's dismissal on Saturday against Bournemouth?
"I would not say it is a lack of discipline, it is more of a blip when you look at how they have acquired those red cards recently," said former Premier League midfielder Nigel Reo-Coker on the BBC Radio 5 Live Football Daily podcast.
"It is a lapse of concentration more than anything else, so those players really need to switch their focus back on and understand what is at stake.
"When you have a lack of discipline and you go a man down, you make it very difficult for yourself no matter the side you are playing."