Laurent Koscielny returns for Arsenal today and slots straight back into central defence alongside Per Mertesacker.
Elsewhere for the Gunners, Martinez keeps his place in goal and Olivier Giroud starts up front with Sanchez, Danny Welbeck and Santi Cazorla all behind.
Alex Oxlade-Chamberlain is on the bench, along with Lukas Podolski.
Here are the teams in full...
Martinez, Chambers, Mertesacker, Koscielny, Monreal, Flamini, Ramsey, Welbeck, Alexis, Cazorla, Giroud
Substitutes: Macey, Gibbs, Bellerin, Rosicky, Oxlade-Chamberlain, Campbell, Podolski
Foster, Wisdom, Lescott, Dawson, Pocognoli, Gardner, Mulumbu, Brunt, Dorrans, Sessegnon, Berahino
Substitutes: Myhill, McAuley, Gamboa, Baird, Anichebe, Ideye, Samaras
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