Arsenal v AC Milan key battles After Arsenal's mauling in Milan everyone has written off the north Londoner's chances of progression. Arsene Wenger's team must start strongly at home and with Alex Oxlade-Chamberlain likely to come into the midfield they pose a different kind of threat than when Mikel Arteta is playing. Milan have said they know little about the England under-21 international, so expect to see the Arsenal teenager on the ball a lot. No team has ever progressed in the Champions League after such a heavy first-leg defeat. If Arsenal score they must hope Milan grow nervous, wary of being embarressed. Here are some key battles that could decide the outcome of this encounter. Click here or click 'VIEW GALLERY' to launch our guide.