The Glazers own both Man U and the Tampa Bay Buccaneers of the NFL, and there have been recent reports (one example here, another here, and lastly here) of high debt and operating losses that have caused some to question their future involvement with the team.

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In fact, some of the groups here have been embroiled in lawsuits against one another.

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Marriages, under threat in some of Ms Barker's other books, here have already broken up in one way or another.

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"Here are the biggest competitors who have the greatest respect for one another, " Kirmser said.

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"We have 40 people working here and it meant that if one set of people were receiving emails, another set couldn't, " he said.

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