Arsenal have confirmed William Gallas and Andrey Arshavin will be out for at least three weeks with calf injuries suffered against Barcelona.
Gallas returned from a calf problem to start Wednesday's UEFA Champions League tie with Barcelona, but was forced off with a recurrence of the injury.
Arshavin was withdrawn during the first half of the 2-2 draw and now joins Cesc Fabregas on the sidelines, with the Arsenal captain out for six weeks with a cracked fibula.
Gael Clichy and Denilson are also injury concerns ahead of Saturday's Premier League game at home to Wolves and Arsene Wenger is awaiting some positive news on the fitness front.
Like an army
"At the moment, we are like an army who have come back from a big battle," the Gunners manager told Arsenal TV Online.
"We have some bruises, but we need to recover and then go to the next battle. Who will be available for the next one? I have to wait 24 hours more.
"William had a recurrence of his calf strain. That is at least three weeks. The next one is Arshavin - calf strain, three weeks.
"Gael Clichy is struggling with a back problem. He might need a breather as well. I don't know yet, we will assess that tomorrow. Denilson has a groin problem, we will assess that too.
"Clichy and Denilson are 'possibles' to play at the weekend.
"We have Silvestre and Campbell available. Then of course there is Rosicky and Eduardo. Vela is coming back too."