CB: Per Mertesacker
The big German has struggled for consistency this season but will have to be back in the side once again with Wenger more than likely unable to select Koscielny so frequently due to fitness concerns.
CB: Nacho Monreal
With Koscielny given a rest and Debuchy also dropped to the bench Nacho Monreal will be forced to deputise at centre back once again despite it not being his natural position.