Dan Ashworth is set to take Newcastle to arbitration in an effort to resolve the impasse over his intended move to Manchester United.
Ashworth has been on gardening leave since 19 February after informing Newcastle he wanted to join the revamped set-up under Ineos at Old Trafford.
The Red Devils' intention is for the 53-year-old to become their new sporting director.
However, there has been no agreement over compensation.
United have become increasingly resigned to not getting Ashworth into the club until after the summer transfer window has closed.
Yet even that hinges on a resolution to the impasse and so far, the two parties are a long way apart.