Pierre-Emerick Aubameyang isn't certain to start Arsenal's Premier League clash with Chelsea as the club captain recovers from a calf problem.
Mikel Arteta is set to face a late decision over the availability of the skipper, who could start the game from the bench as the Gunners seek a result which could kickstart their season.
Gabriel Martinelli is a doubt too after the returning Brazilian injured his shin during the Carabao Cup defeat to Manchester City in midweek.
He could also be on the bench, while Granit Xhaka seems set to return to the starting XI after his three-game suspension. Thomas Partey is still out, while Bernd Leno, Bukayo Saka and Kieran Tierney look certain to return after missing the City game.