Arsenal will be without Nicklas Bendtner for Tuesday's Champions League game against Olympiakos after the striker was involved in a minor car accident.
"Nicklas did not practice because he had a car accident on Sunday," manager Arsene Wenger said. "Fortunately there was no real long-term damage, but he was bruised and we thought it better he did not train. He should be back for Sunday's game [against Blackburn]."
England forward Theo Walcott is expected to return from a back problem in time for the weekend, but Denilson is set for up to two months on the sidelines with a fracture to his back.
Goalkeeper Manuel Almunia is still troubled by the chest infection, so Vito Mannone will continue in his place following man-of-the-match display against Fulham.
Samir Nasri (leg), Lukasz Fabianski (knee) and Johan Djourou (knee) remain out.
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