Arsenal beat Slavia Prague 5-1 on aggregate to set up a semi-final meeting with former manager Unai Emery and his Villarreal side.
Meanwhile, United are set to face a number of their former players as they beat Granada 4-0 on aggregate to seal a clash against Roma, where Henrikh Mkhitaryan and Chris Smalling – who would possibly get in this current United side – both play after being sold on by the Red Devils.
It means an all-English final could happen… but the only way the Gunners can win the competition is if United ‘stink the place out’ in the final, according to former Chelsea player and talkSPORT host Jason Cundy.
Cundy told the Sports Bar last night: “They shouldn’t win this competition. Man United should win it.
“Arsenal won’t win it. I don’t know how Arsenal can. The only way Arsenal can is if United rock up and stink the place out, which they can do, and Arsenal put in a performance above expectations.”