Arsenal manager Arsene Wenger will be without Kieran Gibbs and Yaya Sanogo for tonight's Champions League clash with Bayern Munich.

Gibbs has been ruled out with an ankle injury, but the loss of their first-choice left-back has been balanced by the return to fitness of Laurent Koscielny.

Wenger has admitted that Thomas Vermaelen could now switch to full-back as the Gunners look to over-turn a 2 - 0 first leg defeat at the Allianz Arena.

Arsenal are also missing Nacho Monreal, Jack Wilshere, Aaron Ramsey and Theo Walcott as they go head-to-head against a Bayern team which warmed up by hammering Wolfsburg 6 - 1 at the weekend.