Heather 'to get a £25m payoff'

They spoke out after Miss Mills's former bodyguard, Sean Ghent, suggested she was seeking a £200million settlement.

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Heather is convinced that she and Paul are close to a settlement and agreeing this sum

Ghent said Miss Mills's lawyers would argue that she is owed the incredible amount because she helped Sir Paul through his grief after his first wife Linda died.

"Heather's side predict a walkover," he told the Sunday Mirror. "She spent seven years with him [McCartney], in which she picked him up, got him back on his feet after Linda's death and rebuilt him emotionally.

"He would never have gone on a world tour in 2002 if it wasn't for Heather. A fair settlement would be between £100million to £200million."

But a source close to Miss Mills said she was "furious that people might think she is after this much money".

"Two hundred million pounds is way off the mark and has never been Heather's target," said the friend.

"The real figure she has in mind is most definitely £25million, no more, no less. Heather is convinced that she and Paul are close to a settlement and agreeing this sum.

"It is just a matter of time before the paperwork is completed and she walks away a millionaire."

A spokesman for McCartney declined to comment.