Last seasonâ€™s fixture was a nightmare for the Argentinian, who was red-carded in a 3-0 defeat.
He admitted: â€śItâ€™s a much better feeling this year!
â€śI had to forget about what happened last season. I was sure going into this game I wouldnâ€™t have the same problem. I was determined not to suffer that again. The team played very well and we kept the same level we showed against Real Madrid.
â€śWe have to keep going the same way. It was a great day for the supporters and we are really happy. To beat Real and now United with four goals in each game is very good.â€ť
He added: â€śWhen you have key players like Fernando and Stevie Gerrard in front of you, and in that form, it gives you confidence that you can always go on and win.
â€śAll we can do now is keep going. There are still nine games to go and we need to win every single one to have a chance of catching United.â€ť