Ahead of their clash against Borussia Dortmund tonight, GiveMeFootball highlight some of the danger-men who could cause the Gunners problems in Germany.
Arsene Wenger's side qualified for Europe's top table after a famous win in Udinese almost a month ago, and whilst the Gunners' group looks relatively kind, a tricky looking trip to the Bundesliga champions will be far from easy, given the quality BVB possess.
The future of German football, Gotze has been earning rave reviews at both domestic and international level following his meteoric rise to the top last term.
A product of the club's youth system, Gotze was heavily linked with a €35 million move to either Arsenal or Manchester United throughout the summer, with both clubs desperate to snap-up the 19-year-old, who already boasts nine caps for his country.
Gotze is a diminutive playmaker with an eye for a pass, although scoring goals isn't a problem with six in the league last season and another in the opening game of this term. Undoubtedly the one to watch tonight.
A 25-cap international for Japan, Kagawa enjoyed a fantastic first season at Signal Iduna Park after joining from Cerezo Osaka in 2010.
The attacking midfielder scored eight goals in 18 league appearances for BVB last season, and has become a figure of consistency for Jürgen Klopp's side, starting all five games so far this term.
Another player heavily linked with a move to England in recent times, Kagawa will be hoping to enhance his reputation further with a first chance in the Champions League.
The Polish striker has made a fine start to the current campaign, netting twice in four appearances for BVB in a shaky start to the current campaign.
A 23-year-old striker with 36 international caps to his name, Lewandowski is a typical No.9 striker who earned his move after two fine seasons with Lech Poznan, and will be expected to convert the chances created by the aforementioned duo.
A versatile Croatian who can play in either a forward or midfield position, Perisic has featured in all five Bundesliga games this season for Dortmund coming off the bench.
Likely to utilised in a similar role tonight, the former Club Brugge star is capable of changing a game with his presence and technical ability, two attributes that have earned the 22-year-old international recognition this year.
The German centre back has been a key component of the success at Dortmund, building a reputation as one of his country's best defenders after moving from Bayern Munich in 2009 following a successful season-long loan at the club.
Hummels has played every minute from the champions so far this season, and whilst Neven Subotić has been grabbing the headlines with transfer links across Europe, it's the 22-year-old who will throw his body on the line for the Champions League cause.