Definately Roma. They still have chances of qualifying, but only if they win against Ajax at Olimpico, and that is quite possible. They are the weakest team, and we have showed before that we are better(we should also be able to go through if we meet Milan or Inter). With our strongest squad and a two great performances, we should easily qualify for the semis, if we meet Roma of course.
we wont get roma cause they wont take 1st place in their group. after the game this weekend we'll see if milan would be good for us.
personally i would preffer barca or valencia, cause barca still sucks in la liga, and that run of wins does not count when it comes to play-offs. and valencia were beaten 3-0 by roma at home. so why not?