Mikel Arteta says William Saliba’s first-half red card cost Arsenal the game after they lost 2-0 to Bournemouth on Saturday.
The French defender was sent off a half hour into the match for denying a goal scoring opportunity when he took down Evanilson as the striker ran in behind the backline.
Ryan Christie broke the deadlock off a clever corner routine in the 70th minute, before Justin Kluivert converted from the spot to secure the Cherries’ second ever Premier League win over the north London outfit.
It’s the third time Arsenal have had a player sent off in the league this season, the most of any top-flight side.
