"I still love the challenge of going out on the training ground and improving my game, seeing if I can get better. I don't know what my maximum is, but I'm always striving to be better than I have been before.
"Ideally, I want to play until I'm 40 - maybe I can even stretch that to 42 - but that's what I want because this is what I love doing and it's what I've done my whole life.
"I want to stretch out this experience as long as possible because I like it so much. My goal is to play 22 years of professional football and I want to experience as many good moments as I can."
Read the full interview with Robin van Persie in the latest issue of Inside United.