Arsenal defender Gael Clichy is facing a month on the sidelines after suffering a suspected stress fracture in his lower back.

The left-back is an integral member of Arsene Wenger's first XI but has been forced onto the treatment table after sustaining the injury.

France international Clichy will miss Wednesday's UEFA Champions League clash with AZ Alkmaar and the next European clash against Standard Liege on November 24.

The problem will also keep him out of the reckoning for the forthcoming Premier League games against Wolves, Sunderland and London rivals Chelsea.

Clichy could return for the Carling Cup quarter-final meeting with Manchester City at the start of December but it is unlikely Wenger will rush him back into action.

Midfielder Tomas Rosicky returns to the squad the Group H clash against Alkmaar at Emirates Stadium following a knee problem.

Striker Nicklas Bendtner (groin), goalkeeper Lukas Fabianski (thigh), Theo Walcott (knee), Denilson (back) remain out.

Arsenal team (from): Almunia, Gibbs, Vermaelen, Gallas, Sagna, Song, Fabregas, Diaby, Arshavin, van Persie, Eduardo, Mannone, Eboue, Ramsey, Senderos, Nasri, Rosicky, Silvestre.