Sarah Ferguson is tipped to give a bombshell interview after her exile.
The former Duchess of York, who was previously married to Prince Andrew, needs to money in order to sustain herself.
Speaking about Fergie, TALKTV host Mark Dolan said: "She feels that she's been thrown under the bus, that it was Andrew's ill-advised relationship with the disgraced ex-financier, and therefore, she's got the record to set straight."
He also added: "She needs the cash, and it's very possible that she will sign a million-dollar deal to spill the beans... The big problem is for Charles because this whole scandal threatens to taint his entire reign as monarch."
This comes as Fergie is set to move in with Princess Beatrice after being asked to live with the Royal Lodge.
A source told Mail on Sunday: “The granny annexe seems to be ready to move into now.
“It'd be perfect for Fergie, wouldn't it? The stonework has all been repointed, the gutters renovated, the woodwork nicely painted. It has its own entrance.
“Just today, the road was blocked for a delivery of propane gas bottles for the annexe. That coincided with the first cold snap of winter.