Never before have Celta Vigo made it this far in the Europa League, but they'll have to get by the toughest opponent of all, on paper at least, in Manchester United in the semi-final round.
The first leg will be at Estadio Balaidos, making it all the more difficult as the Red Devils will be happy to have been awarded the return leg at home at Old Trafford, as was the case against Anderlecht.
Ajax and Lyon both survived extra-time scares, the French club going all the way to penalties to set up another exciting tie.
