Start listening from 13:40
https://disneydish.bandcamp.com/track/marvel-us-disney-ep-2-when-we-almost-review-thor-11152017
Jim Hill is a Disney insider with plenty of history of dishing out inside scoop on all things Disney. He also has sources inside of Disney.
He recently started the Disney Marvel Us podcast to talk all things Marvel. According to him, people inside Disney have told him that Disney has the FF movie rights and they have had it since last year. He mentions the XMen TV shows as what Fox got for giving up the FF rights. According to him, Disney has the movie rights regardless of a possible Disney Fox acquisition.
It certainly makes one think when you get Jim saying that along with James Gunn going "Ego was 100% Fox and we traded it for allowing Fox to change Negasonic, then the story changed saying Ego was shared and Marvel got him exclusively for allowing Fox to change Negasonic", Watchers in GoTG and Skrulls in Captain Marvel and Kevin Feige going, "No. Theres joint custody with a number of things. There are certain characters that they have, but races that we share. If that makes sense?"
Maybe Willie will get a surprise in IW movie trailer regardless of a Fox purchase lol.
Take it with a grain of salt.