The Gunners managed to get a 3-0 win against Villarreal in the quarter-final at Emirates Stadium on Wednesday.
He told Sky Sports: “What was really important was that we’d said we wanted to try to score early, keep the pressure on and we did that well.
“At the end 3-0 is quite a fair result, we could have scored a few more but let’s not be greedy.
“(Facing Manchester United) is unbelievable for us. What can you say? To be in the semi-final of the Champions League against maybe the best team in Europe, and the world, we would take it for sure.”
