Wilshere was bodychecked by Alfred N'Diaye midway through the second half of the game at the Stadium of Light, before being helped from the pitch.

Centre-back Koscielny was a late withdrawal from the matchday squad after aggravating his calf in the warm up for the game, which Arsenal won 1-0.

But Wenger has tempered fears of an extended period on the sidelines for the pair.

"(Koscielny has a) calf problem. We think it's a question of days because he had a positive scan," Wenger said.

"He limped out with the French national team (against Germany on Wednesday) and we decided to give him a try in the warm up but it was not good enough, but I don't think it's long term.

"Jack (has) a big kick on the thigh, he could not walk. Again it's just a question of four or five days."