Van Persie hails Man Utd "environment"
Van Persie credits his success - along with the continued longevity of United's older stars - to the culture that boss Sir Alex Ferguson has created at the club.
"There is a new challenge for me every day at United," he said.
"My development is an ongoing process. That gets an extra boost when you are surrounded by new coaches and team-mates, all with their own ideas, in a totally new environment."