Arsenal were drawn in a difficult but negotiable Group D alongside Borussia Dortmund, Galatasaray and Anderlecht.
Borussia Dortmund, like Arsenal, have an outsider chance of winning the Champions League, if things go their way. If that isn't enough to persuade you of their talents, names like Mats Hummels and Marco Reus roll of the tongue as world class players. With a supporting cast of Weidenfeller, Sokratis, Subotic, Piszczek, Sven Bender, Nuri Sahin, Mkhitarian, Aubameyang, Blaszkowski and Immobile providing a framework for a strong side full of depth.
Furthermore, on the way to topping the group they were both in, Dortmund beat Arsenal. Although Arsenal were able to beat them in the reverse fixture, there victory was rather fortuitous and Dortmund were in the middle of an injury crisis.
With Dortmund having the upper hand in big match contests, you would always favour the German club against Arsenal.
If there is any consolation, it is that this is the fourth time Arsenal are encountering Dortmund in the group stages, and the third in recent years; therefore, they should be familiar with their opponents. Then again, so should Dortmund with Arsenal.
Whilst only Dortmund can stand toe-to-toe with Arsenal in terms of quality, Galatasaray provide stern competition, especially at their home ground, the Turk Telecom Arena.
In last season's Champions League campaign, they held Juventus (a side very much on Arsenal's level) to a 2-2 draw away from home, then proceeded to knock Juventus out in the very last group stage game with a 1-0 victory in Turkey.
Although Galatasaray lost in the last 16 tie with Chelsea, they held them to a 1-1 draw in Turkey. Two seasons ago, Galatasaray defeated Manchester United in Turkey to qualify for the last 16 stage. After getting past Schalke, Galatasaray lost to Real Madrid 5-3 in the quarter-finals, though they did manage to defeat the Spanish club 3-2, again, in Turkey.
With players like Sneijder, Burak Yilmaz and former Gunner Emmanuel Eboue plying their trade at Galatasaray, the Turkish giants are always capable of raising their game.
As for Anderlecht, on paper they are the whipping boys. However, on paper Arsenal were supposed to thrash Besiktas in the Champions League qualifier, truth be told they are lucky to be in the group stage.
With Arsenal without an established striker due to Giroud's absence, goals might be hard to come across, especially if Wenger does not plan to replace Giroud.
One slip up against Anderlecht and Arsenal will be struggling to accrue points.