Tim Sherwood said on Friday that Kyle Walker, Mousa Dembele and Emmanuel Adebayor are all doubts for the game, but refused to rule any of them out completely. However, Gylfi Sigurdsson is fit again after sitting out the game against Benfica. Michael Dawson, Etienne Capoue, Vlad Chiriches and Erik Lamela all remain out. Because the former three are missing, it's entirely possible that Milos Veljkovic or Zeki Fryers could end up playing central defense at some point in the next few games.
Aaron Ramsey had targeted this game for his return, but he suffered a setback in training this week, and Arsene Wenger says he'll be out another couple of weeks. Jack Wilshere and Mesut Özil also remain out, so the Gunners will depend heavily on Alex Oxlade-Chamberlain, Santi Cazorla and Tomas Rosicky to up their games.
Abou Diaby is still Abou Diaby, so he's out too. Kieran Gibbs is unlikely to play due to an ankle injury, but Nacho Monreal has been declared fit for the derby, so Arsenal won't have to go with a makeshift left back. Yaya Sanogo, who was hurt against Everton, should be back. Kim Källstrom is also fit and could make the bench for the first time.