Cesc Fabregas is likely to return for Arsenal's early evening game with West Ham on Saturday after recovering from a hamstring injury.
The Gunners captain Fabregas has been out since March 6, missing the matches with Porto and Hull, but is expected to come through a Friday morning fitness test.
Tomas Rosicky is also likely to return following a groin problem, but defender William Gallas' calf injury is still a source of concern.
Gallas has missed the last six games and will be out for at least two further matches, so will miss the visit of the Hammers and the match at Birmingham on March 27.
"Cesc and Tomas have a final test tomorrow morning," manager Arsene Wenger told Arsenal TV Online on Thursday.
"They should be available for Saturday.
"From the last game we don't lose anybody. So normally we should have Fabregas, Carlos Vela and Rosicky back. Plus of course we have Song coming back from suspension.
"However, William Gallas will not be available this week or at Birmingham. It is going on and on. It is a concern.
"It is an endless calf strain and so we need Sol Campbell and Mikael Silvestre to be highly ready to help us out."