Arsenal will be without captain Martin Odegaard, Bukayo Saka, Ben White, Kai Havertz and Gabriel Jesus for Tuesday's opening Champions League match against Athletic Bilbao.
Odegaard came off with a shoulder injury in the Gunners' 3-0 win over Nottingham Forest at the weekend, having already injured a shoulder against Leeds a week earlier. Saka has been sidelined with a hamstring problem since August 23.
On Saka ahead of the clash, Arteta said: 'It's very early to understand when, which week he's going to be available, but he will certainly be pushing to be available as quick as possible.