The former Crystal Palace star has caught the eye in preseason for United.
Young told MUTV: "It's always good for the club having additions like Wilf and he's been fantastic.
"He's had the experience of joining the tour a bit earlier on and he's got to know the team. As a club, any new player who comes in is welcomed with open arms. From the experience I had, you just have got to work hard and get your head down and that's exactly what I've seen so far from Wilf.
"He's going to be a fantastic player. We wouldn't have signed him if he wasn't going to have a great future and he'll have the experience of listening to the older, experienced players talk. He takes that on board and he'll go on to settle in straight away. It's easy to settle in at a place like this."