Actually it was very obvious that Roma were going to face lots of problems playing against Athletic Bilbao who are at an extraordinary form at the moment as far as this tournament is concerned, right now in this tournament I can categorically state that they are one of the favorites alongside Manchester united and Real betis too, and if you can remember vividly, you would notice that Spanish clubs often dominate this tournament and from the inception of this particular fixture between AS Roma and Athletic Bilbao, it was quite clear that Bilbao would go through and they didn't disappoint the home fans.
It should not have been so difficult if one of Roma's players did not get a red card because we can see how the match went in the first leg. Roma started to lose concentration to match Athletic Bilbao's game after their player got a red card so their strength was no longer balanced. In that match Athletic Bilbao attacked in full composition so it was difficult for Roma to stop their movement.
Several teams that qualified for the next round have the same chance and I think almost all of them will do their best to maintain their chances of qualifying for the final. This will be a very tense match and we will see how Manchester United can beat the opponents they will face in the future.