Arsenal fear Laurent Koscielny's calf injury will drag into the weekend.

Victory over Swansea City tonight would help draw a line under Saturday's embarrassing loss at Chelsea, but the Gunners go into the game without key defender Koscielny, who sustained a calf injury at Stamford Bridge.

It is feared the France centre back could miss around two weeks, ruling him out of the crunch match against Manchester City on Saturday.

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