United's £22million star now knows dreams can come true.
Van Persie told The Sun: "I've waited a very long time for this - it's what every professional dreams might happen one day.
"That's why I sacrificed so much to come here. I chased a dream and I'm so happy the dream has now been fulfilled.
"I still can't believe it. It's just an incredible feeling.
"It is also a massive relief - after all this time, to be lucky enough to win a title in one of the hardest leagues in the world."