Mikel Arteta is fielding an Arsenal back four that is playing together for the first time against Bayern Munich in the Champions League on Wednesday night.
William Saliba and Cristhian Mosquera will be the centre-back partnership, playing together for the first time.
Jurrien Timber is at right-back, as usual, while Myles Lewis-Skelly comes in at left-back with Riccardo Calfiori on the bench.
Gabriel is out injured, which leaves a spot up for grabs alongside Saliba at centre-back and Arteta picked Piero Hincapie in that position against Spurs at the weekend.
The Gunners boss has mixed things up against the German giants, though, explaining that Hincapie needs to be rested after a busy schedule.
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