After conceding a last minute equaliser to Swansea City last night, manager Arsene Wenger revealed the Gunners are set to be without the influential midfielder for a fortnight longer than expected.
Ramsey has suffered a setback in his recovery from a thigh injury that has kept him out of action since the 3-1 win over West Ham on Boxing Day.
“Ramsey is maybe two weeks. He’s had a setback,” Wenger said.
“He’s had some scar tissue, then you have to slow down and the tendon is in a sensitive place. You always have to push but not too far.
“Koscielny is out for a while, after that Ozil is at least two or three weeks.”
Two goals in just over a minute from Lukas Podolski and Olivier Giroud gave Arsenal a second-half lead after Wilfried Bony’s has opened the scoring for Swansea in the first half.
However, a last minute own goal from Mathieu Flamini ensured Swansea left north London with a share of the spoils.
Wenger refused to criticise the performance of his team however, despite the disappointment of failing to bounce back with a win after Saturday’s 6-0 humiliation at Chelsea.
“The result is very disappointing but the spirit we put in and the effort we put in was great,” he said.
“We have to take it on the chin. We did the most difficult thing coming back to 2-1 and after that you could see that maybe we were too focused to keep the result and maybe too conservative, because our confidence level had been affected by Saturday and we just wanted to win the game without pushing any more forward.
“A mistake happened unfortunately and it created a result we didn’t want tonight. But overall I have to give credit to the fighting spirit and the desire we put into that game.”