Anderson inspired Ronaldo to hit Man Utd winner
The Portugal international told MUTV: "Anderson caught me and told me to do something for my mum, my family and I said ok.
"But my conscience is still the same and the people will understand.
"I always try to score, and I am happy to score again - but not just because it's Sporting. I said before, the people of Sporting respect me and I respect Sporting, but my colours now are red and I feel that's for good."