Manchester United's gung-ho recruitment drive under Sir Jim Ratcliffe's INEOS is angering other Premier League and Championship clubs, according to reports.
The Red Devils have been on a mad dash for new top-level personnel since Ratcliffe's investment in the club was announced on Boxing Day, with the British billionaire securing a 27.7 per cent stake in United.
Omar Berrada was the first shock announcement of Ratcliffe's reign after deciding to leave rivals Manchester City to become United's new Chief Executive.
Dan Ashworth was the next high-profile target and has subsequently been placed on gardening leave by Newcastle after he revealed ambitions to move to Old Trafford.
Mail Sport revealed in recent days that a formal approach has now been made for Southampton director Jason Wilcox, despite Erik ten Hag's future past this summer yet to be decided.
Manchester United are continuing in their attempts to lure new staff from rival clubs
United 's gung-ho recruitment drive under Sir Jim Ratcliffe 's INEOS is angering other clubs
Manchester United have made a formal approach to bring Southampton director of football Jason Wilcox (left) to the club
Newcastle and Southampton are unhappy with United over the manner of their approaches for new boardroom staff, as reported by The Sun.
The Red Devils have agreed to pay Southampton 12 months of Wilcox’s wages as compensation, but the Championship club are understood to be holding out for a bigger package and a deal has yet to be agreed.
Wilcox has kept a low profile at Southampton since news of United’s interest first emerged in February, but he has not been placed on formal gardening leave.
The 52-year-old only joined the club last summer after spending 11 years working at Manchester City in various junior squads, with his last six years spent as Academy director overseeing the development of stars such as Phil Foden, Rico Lewis, Oscar Bobb and Cole Palmer.
United have shown no signs of slowing down their drive for new top talent to help revolutionise a future period of sustained success and their behaviour is a hot-topic around other clubs monitoring from afar.
Newcastle have already placed Dan Ashworth on gardening leave after United's approach
United appointed Manchester City executive Omar Berrada as the club's new CEO
INEOS have acquired sporting control of the club meaning they can make new appointments, but the American Glazer family still hold the majority of shares.
Ratcliffe wasted no time in revealing his ambitions to make the 13-time Premier League champions a driving force amongst Europe's elite again after a difficult period since last winning the top-flight title in 2013.
The 71-year-old explained it was important United qualify for next season's Champions League so they can have more financial freedom in the summer transfer window.
A decision over whether to bring in a new manager or carry on with Ten Hag at the helm for next season is yet to be decided with United currently in sixth and 11-points adrift of fourth-placed Aston Villa.