This is a modal window.
Manchester United's next Europa League opponents, Celta Vigo, are in unchartered waters after making it to the semifinals of a major European competition for the first time in club history.
The La Liga outfit held Genk to a 1-1 draw in Belgium on Thursday to progress 4-3 on aggregate and set up a meeting with the three-time European champions.
Celta will host United on May 4 before travelling to Old Trafford a week later for the return leg.