Arsenal have two more injury worries to contend with after Alex Song and Theo Walcott picked up knocks against Everton on Tuesday night.
Defensive midfielder Song is struggling with a leg problem having been inadvertently kicked by team-mate Laurent Koscielny during the Gunners' 2-1 win at Emirates Stadium and replaced by Abou Diaby.
Young winger Walcott, meanwhile, completed the full 90 minutes but was left nursing an ankle problem after the final whistle.
Manager Arsene Wenger told the club's official website: "Song cannot walk. I don't know what he has got.
"He was kicked, I think it was by Koscielny, he knocks out everybody in our team!
"So we have to see how he responds to that in the next days, but he cannot walk at the moment."
The duo's injuries strike another blow for Arsenal after key midfielder Samir Nasri picked up a hamstring problem in Sunday's FA Cup win over Huddersfield.
Wenger has confirmed the French star will be out for three weeks after undergoing a scan on the injury, meaning he will miss the Gunners' crucial UEFA Champions League tie against Barcelona at the Emirates on February 16th.
He added: "For Nasri, the scan shows a hamstring strain. (He will be out for) 21 days."