‘The source of the story, that Mueller met with Trump is unnamed from CNN, so it’s most likely Fake News.’
The original source was Christopher Ruddy, who runs Newsmax. He is a friend of Trump’s, which is what leant the report credence
It appears Ruddy got the story from NPR.
Newsmax cited NPR on June 9th. Newsmax claimed NPR had two unnamed sources.
NPR reports that Mueller had met with officials from the DOJ and the White House about the FBI director opening. Deputy Attorney General Rod Rosenstein later asked him to work the Russia case instead.