After the first leg ended I think Arsenal and Barcelona have already put one step into the semifinals. On the other hand PSG also has a big advantage after leading 2 goals over Aston Villa. I think only the match between Munich and Inter Milan is still being debated about who will advance. Munich lost 1-2 in that match but they still have a big chance to turn things around. And for Real Madrid I think they are really in a pretty tough situation. I always believe in Real Madrid's mentality and they can always overcome the tough situations they face in the UCL. But throughout the history of the UCL as far as I can remember there are only 4 teams that can comeback after being 3 goals behind in the first leg. At first I thought this was not a tough mission for Real Madrid. But the injuries of several key players and the red card received by Camavinga made this mission very impossible.