AC Milan have a very easy group, though they'll lose in Leningrad to Zenit. As do Arsenal. Group A is an unknown quantity, anyone could win that group. Except Zagreb. Man United have two very difficult away trips to Cluj and Galatasaray. We may well see them struggle to top the group. Ajax and Dortmund should pose no problem for City and Real. Group G is the group of death, because you have Barcelona a few dozen classes above the rest and then three teams that are all capable of beating each other, even Spartak 'We're so irrelevant that everyone calls us CSKA' Moscow. Also it'll be a bit lol to see how the princesses of La Masia handle playing in the cauldron that is Celtic Park, and their favourite away excursion to Russia. Barca should still comfortably top the group but they have a non-existent defence, Celtic have one of the strongest home records in Europe, if Benfica still have that massive Cardozo bloke they could shock Barcelona, and even 'CSKA' might take a point off Barcelona at home.