Arsenal goalkeeper Lukasz Fabianski is rated as 50/50 for Saturday's trip to West Ham.
The Poland international has missed both games since the goalless draw with Manchester City as he is suffering from a shoulder problem.
The 25-year-old will face a fitness test on Friday morning to see if he can feature at Upton Park, and if fails to recover in time then fellow Pole Wojciech Szczesny should continue to deputise in the Gunners' goal.
The 20-year-old made his Premier League debut in the 1-0 defeat at Manchester United last month and has been between the posts for the last two games - the 1-1 FA Cup draw with Leeds and the 1-0 defeat at Ipswich in their Carling Cup semi-final first leg.
"Fabianski has a chance for Saturday," manager Arsene Wenger told the club's official website.
"He has a little shoulder inflammation. He will have a test tomorrow, it is 50/50."
Wenger confirmed that Brazilian midfielder Denilson (thigh) is also doubtful but otherwise the Frenchman can select from an unchanged squad.
"From last night we have uncertainty about Denilson too," added the Arsenal boss.
"He has a little thigh problem but we are still optimistic that he will be available.
"Apart from that we have no-one coming back. Bacary Sagna is suspended while Abou Diaby, Sebastien Squillaci and Thomas Vermaelen are out.
"With Thomas, the news is quite good. He has no long-term problem but we still need to be patient in the next weeks."
Vermaelen has been sidelined since September with an Achilles injury and although tests this week revealed no long-term concern, a comeback for the Belgian defender is not expected to be imminent.