The Murdoch family, which controls Fox, prefers a deal with Disney because it would rather be paid in Disney than Comcast stock, and expects a potential deal with Disney to be cleared by US antitrust regulators more easily, one of the sources said.
Fox is exploring a potential sale as it is has been considered undervalued relative to its peers, said Brian Wieser, an analyst at Pivotal Research.
"At the beginning of this year, Fox was the only buy-rated stock I had because it was so depressed relative to everything else in the sector," Wieser said.
"It's always good to look at what's going to create the most value for our shareholders," he told attendees.
CNBC had reported earlier on Tuesday that a deal for Disney to buy Fox's movie studio and television production assets for more than $60 billion could come as early as next week.
Disney, which has a market value of around $166 billion, would acquire Fox's FX and National Geographic cable channels, its movie studio, the Star network in India and stake in European pay-TV provider Sky PLC.
Fox anticipates that its deal to buy the remaining 61 per cent stake of Sky, which has been held up by regulators, will be approved in the first half of 2018. Any deal for Fox would include the remaining stake of Sky, sources have told Reuters.
Reuters reported in November that Comcast, which is the largest U.S. cable provider and has a market value of around $188 billion, had expressed interest in Fox assets.
They would also be a source of new content at a time when companies like Amazon.com Inc and
Any potential deal would follow the US Department of Justice's decision to sue to block AT&T Inc's