Katherine Jackson's new business partner is a front to allow Joe Jackson to exploit his wife, sources tell RadarOnline.com.
Eighty-year-old Katherine has reportedly entered into a business relationship with Howard Mann, the Canadian-based president of the naked women's wrestling league.
The pair are publishing a book -- "Never Can Say Goodbye: The Katherine Jackson Archives" -- that will be released this week, with a retail price of $59.99.
But a family insider tells RadarOnline.com that Jackson patriarch Joe is secretly behind the business arrangement.
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"Jackson is being financially exploited by her estranged husband," said the source.
"Joe is behind the book that Mann is publishing.
"He introduced Howard to Katherine and he is the one pressuring Katherine into these deals."
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Katherine met Mann five months ago.
Joe, who spends most of his time in Las Vegas, is requesting an allowance from Jackson's estate, even though the King of Pop intentionally left his father out of the will.
Katherine's powerhouse attorney Adam Streisand is monitoring the situation closely, we're told.
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"He is completely aware of it... Adam only has Katherine's best interests, and is advising Katherine accordingly," dished our source.
"Joe is out for one person -- Joe.
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"While the rest of the family will be privately mourning, Joe is out there just trying to get what he can out of the terrible tragedy of Michael's death."