The Poland international was beaten twice in a 2-1 defeat to West Ham as Rob Hall opened the scoring, before Serge Gnabry equalised for the Gunners, only for Paul McCallum to put the Hammers back in front with four minutes remaining.
With Lukasz Fabianski also out injured, Vito Mannone has been the Gunners' first choice in recent weeks with fourth-choice Damian Martinez given the nod and making his debut in the 7-5 Capital One Cup victory over Reading.
|7/1||Arsenal are 7/1 to draw 1-1 with Fulham with bet365|
However, Szczesny now appears to be closing in on a return to the first team, as he looks to regain match fitness by featuring for the Under-21 side against West Ham
Arsenal Under-21s to face West Ham: Szczesny; Angha, Miquel, Squillaci, Hajrovic; Eisfeld, Yennaris, Hayden, Olsson; Gnabry, Akpom.