Arsenal have only third-choice keeper, Vito Mannone, available for this weekend's match at Norwich City.
Arsenal's goalkeeper crisis deepened on Wednesday after Lukasz Fabianski was ruled out for three months with ruptured ankle ligaments, while Wojciech Szczesny suffered a setback in his return from an ankle injury.
Goal.com has learned that Fabianski suffered the injury in training on Tuesday, just as he was closing in on a first-team comeback.
Szczesny has been wearing a protective boot for around 10 days as he steps up his recovery from the ankle injury which has kept him out for month, but Goal.com understands that he is still two to three weeks away from a return to training.
Mannone has looked pretty good when used both this season and last. He's a pretty good short-term fantasy option with Norwich and Queens Park Rangers to face before Arsenal's fixture list toughens up considerably.