Sir Alex Ferguson, United manager

It was a very good result for us in a difficult game. There were two main reasons for our improvement when compared with the first game. We had some important players back in the team and we had four days to rest instead of the two we had one week ago. That's very important, especially in a competition like this one. Ryan Giggs' experience was crucial and Wayne Rooney's energy was just amazing. It's great to see a player like him on the pitch because he's still so young and never stops for a second. Cristiano Ronaldo's goal was sensational. He played a lone role but did well. I need to think hard to remember a better goal than this one. To start a game with a goal like that is just amazing and the perfect way to turn the tie around. Porto had to chase us and they didn't have any chances to score. They played very well in the first half at Old Trafford but we were better in the second half, before they were lucky to score a last-minute goal. We came here to win the match. There was little separating the two teams in this tie but I think overall we deserved to qualify. Now we will face Arsenal and it would be great to win the first leg 1-0. They play great football but this is an entirely different clash from the ones in the Premier League. Let's see what happens.