Defence: Calum Chambers, Per Mertesacker, Rob Holding
The first time we’ve seen this trio in our new defensive formation but there’s enough quality here to see out a clean sheet against arguably our toughest opponents in the group.
If this game was being played away then I’d maybe throw Mustafi or Monreal in to this but the fact these three players are all on good terms with the fans will help them settle in.
It’s a big moment for Chambers who will make his first appearance in an Arsenal shirt after returning from a season-long loan spell at Middlesbrough and shaking off an injury.
Chambers was due to be shipped off this summer but Gabriel’s departure meant his position was safe, allowing him to play against his best friend and England roommate, Holding.
Mertesacker will be thrown into the middle of them to add experience and his performance in the FA Cup final reassured us all he’s capable of playing this new role.