You can see Arsenal in action live on Sky 1 HD this Wednesday from 7.30pm.
The Gunners take on Belgian champions Anderlecht and will be considered favourites to win despite an ongoing injury crisis.
Laurent Koscielny, Mathieu Debuchy, Mesut Ozil, Olivier Giroud, Serge Gnabry and Yaya Sanogo are all out of action, while Aaron Ramsey has only recently returned to fitness and Theo Walcott is not yet ready for a competitive return.
It will be a big night for Arsenal's goalkeeper Emiliano Martinez, who is set to not only play his first game in two years for Arsenal but make his Champions League debut. This is owing to first choice Wojciech Szczesny being suspended and understudy David Ospina being injured. It will be the 22-year-old Argentine's third appearance for Arsenal having spent last season on loan at Championship Sheffield Wednesday.
Arsenal defender Nacho Monreal admits the situation is far from ideal but, ahead of a trip to Anderlecht on Wednesday, believes Arsenal boast the strength in depth to ensure that absentees do not become 'an excuse'.
He said: "The squad is 24 or 25 players and the rest of the squad has to come in and maintain our level. We won't use it as an excuse.
"I haven't played much as a central defender, I'm naturally more of a left-back, but if the manager wants me to play there, I would do my best.
"Injuries affect all teams but we have had some bad luck. Many of our important players are out and that obviously has an impact."
The one bright spot has been the recent form of Danny Welbeck (pictured). Having arrived from Manchester United on transfer deadline Welbeck has scored six goals in seven appearances including a hat-trick against Galatasaray.
See Anderlecht v Arsenal on Sky 1, Wednesday 22 October at 7.30pm