Probable starting eleven:

Arsenal:
Szczesny, Djourou, Mertesacker, Koscielny, Miquel, Song, Ramsey, Benayoun, Walcott, Van Persie, Arshavin

Man. Utd:
Lindegaard, Smalling, Jones, Evans, Evra, Giggs, Scholes, Carrick, Valencia, Rooney, Nani

Arsenal manager Arsene Wenger has big problems before this match. He will be without many important players. Thomas Vermaelen, Mikel Arteta and Thierry Henry are the latest injury victims. Meanwhile, Abou Diaby, Francis Coquelin, Kieran Gibbs, Carl Jenkinson, Ryo Miyaichi, Bacary Sagna, Andre Santos and Jack Wilshere are all sidelined from before. Additionally, Gervinho and Marouane Chamakh are on international duty at the African Cup of Nations. Still, I believe Arsenal is able to stay unbeaten against Manchester United. First of all, the home advantage is important. I am sure the full Emirats will boos the home players. Then, Arsenal still have some good players like Robin Van Persie. He needs just a little space to make something extraordinary. Finally, Ferguson also has some problems. Rio Ferdinand, Danny Welbeck, Anderson, Tom Cleverley, Fabio, Darren Fletcher, Michael Owen and Nemanja Vidic are all injured. That is why I am believing Arsenal is able to stay unbeaten here.