Ole Gunnar Solskjaer’s side edged past Copenhagen on Monday, 1-0 after extra-time, thanks to Bruno Fernandes’ penalty.
The Norwegian was pleased his side were able to bank some extra minutes in his side’s legs, thanks to the heroics of Swedish shot-stopper Karl-Johan Johnsson.
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Now in the final four though, United will have to be more ruthless, with Sevilla eyeing up yet another Europa League title.
Here is all you need to know about when and where the semi-final will be.
When and where is the semi-final?
The semi-final is back in Cologne at the RheinEnergieStadion on Sunday 16 August.
Kick-off is at 20:00 BST, with the winner set to be the first to book their place in the final on Friday 21 August.
What channel is it on and is there a live stream?
The game will be broadcast live on BT Sport 1 and BT Sport Extra 1, as well as BT Sport Ultimate. Coverage starts at 7pm BST.
Subscribers can also stream the match on the BT Sport website and app.