Arsenal v AC Milan preview

Arsenal midfielders Yossi Benayoun (virus) and Tomas Rosicky (groin) both face fitness tests.
Abou Diaby (hamstring) is out having just returned to action at Liverpool, while Mikel Arteta has been advised to rest after suffering a blow to the head in a collision with Jordan Henderson during Saturday’s 2-1 Premier League win.
Full-back Kieran Gibbs (groin/calf) is also a minor concern, while Wales midfielder Aaron Ramsey (ankle), defender Francis Coquelin (hamstring), centre-back Per Mertesacker (ankle) and Brazil full-back Andre Santos (ankle) are all still out.
Arsenal (from): Szczesny, Sagna, Vermaelen, Koscielny, Gibbs, Song, Rosicky, Oxlade-Chamberlain, Gervinho, Walcott, van Persie, Fabianski, Miquel, Djourou, Jenkinson, Chamakh, Park, Benayoun, Yennaris.