Luton have signed former Peterborough and Brighton striker Craig Mackail-Smith on a two-year deal.
Norwich City have completed the signing of goalkeeper Jake Kean following his release from Blackburn Rovers.
Van Persie enjoyed a stellar debut campaign with the Old Trafford outfit, collecting a second successive Golden Boot prize as he fired United to the Barclays Premier League title.
It justified the Dutchman's decision to leave Arsenal for a major domestic rival.
And, speaking to former United European Cup winner Paddy Crerand in an exclusive interview for MUTV, Van Persie revealed he intends to stick around for a while.
"I have three more years to go and I would like to stay longer," the 30-year-old said. "I know, and I see people around me, making decisions where I think these guys will look back and say 'was that a good one?'. I don't want that.
"I want to play as long as possible at the highest level."
Winning trophies is a key motivation for Van Persie, who had not won a thing at Arsenal since their FA Cup final victory over United in 2005.
Already he has added the Community Shield to his collection.
And he does not feel United should be settling for that.
"That (winning trophies) is what it is all about," he said. "Last year we got one trophy in four. Now we have to look at it from the opposite side.
"We have the chance to get five this year. How many do we get out of those five? In my opinion we should be able to win two or three."
After two games without a win and a goal, United got their Premier League season back on track this weekend, with Van Persie grabbing his fifth of the season in a comfortable 2-0 triumph over 10-man Crystal Palace.
Now the Red Devils prepare to launch their first Champions League campaign of the David Moyes era against Bayer Leverkusen on Tuesday night.
For Van Persie it is a reminder of his only disappointment last term - the knockout-phase defeat to Real Madrid, when the tie turned on a controversial dismissal for Nani, who must serve a one-match suspension.
"It is probably my only regret about last year," Van Persie said.
"The referee played an important part but I should have scored at least one or two goals in those games. I didn't, which I don't like. I have to improve on that.
"Hopefully we can do better this year."