What is Arsenal heading to?

I have to say that it doesn't look good for Arsenal. They really need a draw on their match against Porto this Wednesday in order to stay in group a on the Champions league.

Does Arsene know what he is doing? Does he have all of his players together and fit to play? Well at least he says he does. I am willing to give him a credit for now, mostly since I don't really have another choice, I mean, it's not like they are going to change manager at the middle of the season, or are they?