Song sustained a knee problem in the Carling Cup final defeat by Birmingham last month and missed Arsenal’s defeats to Barcelona and Manchester United.
“I don’t think it’s down to one player,” said the Arsenal manager.
“We would like Song back and we would like Fabregas back. We have now to cope with Djourou [being] out and he is an outstanding player.
“I don’t know [when Song will be fit again]. But certainly not for Saturday.”