Here are the groups:
Group A: Inter Milan, Werder Bremen, Tottenham, FC Twente.
Group B: Lyon, Benfica, Schalke, Hapoel Tel-Aviv.
Group C: Manchester United,Valencia, Rangers, Bursaspor.
Group D: Barcelona, Panathinaikos, FC Copenhagen, Rubin Kazan.
Group E: Bayern Munich, Roma, FC Basle, Cluj.
Group F: Chelsea, Marseille, Spartak Moscow, MSK Zilina.
Group G: AC Milan, Real Madrid, Ajax, Auxerre.
Group H: Arsenal, Shakhtar Donetsk, FC Braga, FK Partizan.
On paper at least, Arsenal should have little difficulty getting through Group H to the first knock-out stage, but they will face a couple of relatively long trips to Belgrade and Donetsk (the new home of former Gunner Eduardo). Most of the other top teams in Europe, including Inter, Man U, Barca, Bayern, and Chelsea, look to have reasonably comfortable groups. But AC Milan and Real Madrid in Group G will be worrying not just about each other but also traditional Dutch powerhouse (but not so much these days) Ajax.