21st Century FOX was a spin-off from Newscorp and was still owned by Rupert Murdoch. He spun off the company so he could sell it, no doubt.
Twenty-First Century Fox, Inc., doing business as 21st Century Fox (21CF), was an American multinational mass media corporation that was based in Midtown Manhattan, New York City. It was one of the two companies formed on June 28, 2013 following a spin-off of the publishing assets of the old News Corporation, as founded by Rupert Murdoch in 1980.
They did not buy Fox News or anything from Newscorp. They bought from 21st Century Fox. Entirely different entity.
21st Century FOX was a spin-off from Newscorp and was still owned by Rupert Murdoch. He spun off the company so he could sell it, no doubt.
https://en.wikipedia.org/wiki/21st_Century_Fox
It was a subsidary of NewsCorp before Disney bought it