Jason Wilcox has left Southampton to become Manchester United’s new technical director with immediate effect.

The 53-year-old becomes a key appointment at Old Trafford as part of United’s off-field overhaul following Sir Jim Ratcliffe’s arrival at the club.

Wilcox joined Championship side Southampton last summer as their director of football, making the switch from Manchester City where he developed a reputation for nurturing excellent young talent as well as recruiting some of the best prospects in the game.

A United statement read: “Jason Wilcox has joined Manchester United as technical director with immediate effect.

“He will work with all technical areas of the football department to achieve the highest standards of performance.

“Jason was previously director of football at Southampton and before that academy director at Manchester City.

“As a player he won the Premier League with Blackburn Rovers in 1995.”

A Saints statement read: “Southampton Football Club can today confirm that it has reluctantly agreed to allow director of football Jason Wilcox to join Manchester United, having reached an agreement with the Premier League side on an acceptable compensation fee.

“Whilst the club is naturally disappointed that Jason’s stay at Southampton has only lasted nine months, it wishes him well for the future.”

John Murtough stepped down as football director at Old Trafford last week.

United are looking to add Newcastle sporting director Dan Ashworth to their staff as Ratcliffe continues his off-field rebuild after taking a 27.7 per cent stake in the club.

Wilcox will report to the sporting director, who will have overall responsibility for football performance, recruitment and operations.

The PA news agency understands Darren Fletcher will continue to play a key role in the football leadership team working across the men’s first team and academy.