Welbeck agreed a deal on Monday to keep him at Deepdale until the summer and he was pleased to be here.
He told the Preston website: "I'm delighted to make the move. I felt it was the right time in my career to get more games under my belt and I think Preston will definitely be the right place for me.
"People will always talk about the link between the Gaffer and his son, but I have just come here to play my football and I am hoping to give 100 per cent for Preston North End.
The 19-year-old England U21 starlet is hoping to get a regular starting berth in attack for the Lilywhites and use the chance to score goals: "I am looking forward to playing up front as a striker, because back at United I was out on the wings a lot and that is not my preferred position; playing as a striker at Preston is going to improve me and off the pitch as a person it will develop me.
"I'm a player that wants to score goals and wants to play the game in the right way. I have been at United since I was nine, so it is a bit different coming away, but it only going to make me stronger and a better player and I am looking forward to it."