The 21-year-old striker, who spent the 2010-11 season on loan to Sunderland, scored 12 goals for the Red Devils last season and earned a call-up to Roy Hodgson’s England squad for Euro 2012.
Welbeck netted the late winner in England’s dramatic 3-2 group victory over Sweden at the European championship, and United boss Ferguson has been delighted with the striker’s development in recent years.
“Danny has been with the club since he was eight years old and has made fantastic progress in the last couple of years – first out on loan and last year as a regular in the first team,” Ferguson told United’s website.
“He has become an important player at international level as well, as the maturity of his performances at the European Championships showed. This year is another important one for him. He has a bright future ahead of him.”
And Welbeck expressed his delight at penning a new long-term deal with the Red Devils.
“Playing for United is all I’ve ever wanted to do – it’s the club I’ve supported all my life,” he said. “I can’t wait for the challenge of the new season to play my part in helping the team compete for trophies.
“I’m learning all the time from the best manager in the game and I’m keen for that to continue alongside the world-class players in the squad.”
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