good question, unfortunately the gunners have barca so no chance, so of all the teams left utd have the best chance but a quarter final is there best chnace, utd would not live with barca or real
Barca are looking pretty good but I would not put much money on Real doing anything. They will prob beat Lyon but after that it is touch and go. Chelsea should be able to get by Copenhagen and I think that Spurs will beat Milan (if they have Dawson and King fit for the two legs).
So I would say that there will be at least two, Chelsea and Utd. With Spurs having a good chance. No chance for Arsenal. Well ig is a two horse race but it would take an implostion from Barca to lose it.
Of course, it all depends on the draw in the last 8 as to who will get any further than that. If the english teams avoid Barca I think they will get through. So at least one and possibly two in the semis. My crystal ball gets a bit snowey after that...