The Dutchman joined United from Premier League rivals Arsenal last month.
Van Persie scored an hat-trick in United’s 3-2 win at Southampton on Sunday.
“He’s a world-class striker who can not only score goals, but lay on assists,” Young told United’s official magazine.
“Robin’s also great from set-pieces. He’s an all-round player and exactly the type a club like United should have – we want the best players.
“He’s fitted in very well but it’s easy for any player that joins United to fit in because the players here are so good at making you feel welcome and really help you settle in.
“It’s still only early days, but you can already see he’s formed some good link-ups in training and on the pitch. He’s a great addition to the squad and I’m sure he will have a big impact this season.”
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Liverpool have unveiled their new home kit for next season, sticking with the hugely popular retro styling of the current shirt.
The reputation of the Premier League means it is the most popular and one of the most watched leagues in the world.