Unai Emery has decided to stick with a back three as Arsenal host 19th placed Southampton in the Premier League.
The Gunners used a three-man defence in their last outing against Leicester City but lost 2-0. Currently sitting eight points off the top four, a win this afternoon will be vital for Arsenal heading into the festive period.
Granit Xhaka hasn't made the squad despite Emery admitting he wants to get the Swiss back into the side and Nicolas Pepe remains on the bench.
Pierre-Emerick Aubameyang and Alexandre Lacazette lead the line as a pair with Mesut Ozil in support behind them.
The midfield two will consist of Matteo Guendouzi and Lucas Torreira, who the Arsenal manager believes can improve in being a more offensive midfielder.
Hector Bellerin and Kieran Tierney start together in the Premier League for the first time as the back three is completed by Calum Chambers, Sokratis and David Luiz.
Returning to Premier League action, Bernd Leno keeps his place in goal.
Despite seemingly settling on a system, Arsenal fans aren't too happy that it is so defensive or that Nicolas Pepe have been left out.
