'The Murdochs as we know them are now almost a thing of the past,' says author Michael Wolff

Rupert Murdoch, center, with sons James Murdoch, (R) and Lachlan Murdoch.

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Rupert Murdoch, center, with sons James Murdoch, (R) and Lachlan Murdoch.

Last week CNBC reported, citing sources, that 21st Century Fox has been holding talks to sell most of the company to Disney, leaving only an entity focused on news and sports.

Wolff called Rupert Murdoch “the man that made the modern media business” and said for the last 30 years media companies have been trailing Murdoch.

“It’s hard to find the logic here,” he said in an interview with “Fast Money.”

While Rupert Murdoch’s roots are in news, entertainment has been a larger part of the company, said Wolff….

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