Unai Emery believes Hector Bellerin will be out for a few weeks after picking up an injury in Arsenal’s 3-2 defeat to Southampton on Sunday.
The 23-year-old received treatment before half-time at St Mary’s but didn’t return for the second half.
Laurent Koscielny, who recently returned from injury, and full-back Stephan Lichtsteiner played at centre back against Ralph Hasenhuttl’s side.
Emery said: ‘He [Bellerin] has one small injury but I think he will be some weeks off. Sokratis is coming back, as are Mustafi and Kolasinac.’
Rob Holding was ruled out for the rest of the season this week after having surgery on an anterior cruciate ligament injury.
Defenders Shkodran Mustafi, Konstantinos Mavropanos, Sokratis Papastathopoulos and Sead Kolasinac are also currently out with injuries but Emery said they should be returning soon.
Danny Ings gave the Saints the lead twice but Henrikh Mkhitaryan struck back twice before Charlie Austin scored with four minutes to go.
The defeat ended the Gunners’ 22-match unbeaten run and was Southampton’s second home league win in over a year.
Emery’s side play north London rivals Tottenham on Wednesday at the Emirates in the Carabao Cup quarter-final.