Manchester United have approached Southampton about hiring their director of football Jason Wilcox, who offered his resignation several days ago.
United want to make him their technical director as part of the new recruitment team and have made an offer equivalent to a year of his salary.
They believe this meets a buyout clause in his contract but Southampton are disputing the clause's existence and are prepared to make him serve a year's notice period before he can take a job elsewhere.
Saints are annoyed at the manner and timing of United's approach with eight games left of the season as they chase promotion from the Championship.
United, on the other hand, believe they have been respectful and followed correct processes throughout their pursuit so far, and that it is unrealistic for Southampton to expect a higher sum.
Southampton are prepared to agree a fee with United but one that reflects that they would be losing him at a crucial stage - but there appears to be an impasse with United currently believing they have met the contractual requirements for his release.
New United chief executive Omar Berrada knows Wilcox, who is understood to be keen on the move, well from their time together at Manchester City, where Wilcox worked his way up from coach to academy director during 11 years at the club.
Berrada wants the former winger, who won the Premier League with Blackburn in 1995, to form a crucial part of the new recruitment setup at Old Trafford; to be guided, eventually, by sporting director-elect Dan Ashworth.
Ashworth is also the subject of talks over a compensation agreement with Newcastle, who have put him on a substantial period of gardening leave that may delay his official start until after the summer transfer
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