STEWART DONALD wants £40million as part of the sale of Sunderland.
The club owner has been close to a deal with the American-based MSD Partners for weeks.
But the extra demand for what amounts to TWO promotion bonuses is proving one of many problems.
Black Cats chief Donald has valued the League One club at around £50m but is after almost the same amount if they made it to the Premier League.
He wants £15m if they get back to the Championship and a further £25m should they make the top flight.
The Americans, whose money was made in the Dell business, do not think the figures compute with their own ideas.
And the group do not see why they should pay Donald and the other current shareholders if they turn the club around and take it to the promised land with their cash and plans.
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Sunderland sit ninth in League One having won five of their 11 games so.
They lost 2-0 at Lincoln last time out in the League.
And Sun Sport revealed yesterday the North East club are set for talks with former Bolton and Colchester United boss Phil Parkinson.