Kieran Gibbs will cover Clichy's absence and Thomas Rosicky is back in training but will not play against AZ Alkmaar. Lukasz Fabianski is out for two more weeks.Arsene Wenger told at Tuesday's press conference ahead of the Champions League game:We have some bad news.Bendtner is quite seriously injured. And on top of that, we have lost Gael Clichy with a back injury which was not expected.It looks like he could be out for a while. We fear a stress fracture but we will know more of that tonight. But if that is the case, he will be out for a few weeks.Nicklas we still do not know yet but we suspect four weeks. Rosicky will be in the squad tomorrow. He will still be short to start but he will be involved. The two goalkeepers will be Almunia, who will play, and Mannone.