RVP is out and so is Eduardo and Abou Diaby.
A number of attacking players have match fitness concerns.
Walcott will play but his knee is still tender and a cause for concern. There is worry that the speedster's knee could be susceptible to some of those crunching tackles. Fabregas got back after 4 months from knee ligament injuries. Adebayor played his first game after two months. Samir Nasri just shrugged off the flu.
Arshavin is ineligible because he played in the group stage with Zenit St. Petersburg.
I think Wenger will go for a 4-5-1 formation with Adebayor, the lone striker and Nasri in the left winger position. Denilson, Fabregas, Song, and Walcott, will round out the midfield. Arsenal will protect the back through Clichy, Toure, Gallas, and Sagna. The defense has stepped up its performance recently and has been quite watertight.