For that much, they could get it, but they probably want XMen rights as well. A similar deal to what they offered for distribution rights to Paramount owned movies would get it done. The movies Paramount owned the rights to were hype, and FF - right now - is very toxic.
I was talking to a co worker of mine today and we were talking about comic book movies and how all 3 FF movies were garbage. He wondered why Marvel made such great movies like Civil War and Avengers, but garbage like FF. I told him about the legal situation and to look out for the real Marvel Studios logo so he knows which ones are made by Marvel, and he was like, "ohhhh that makes a lot of sense". We then started talking about what Marvel could do with the FF and a "Hulk vs Thing" brawl happening on the big screen.
Iger got bigger worries, such as finding his successor or extending his contract. He also needs to worry about ESPN's declining subscription base, BAM investment and other M&A opportunities. Disney has been linked to buying giants such as Netflix, Warner Brothers, EA, Twitter, etc. FF, XMen IP movie rights acquisition is something that Iger would only get involved later on, after someone else got the convo started. Perlmutter is more worried about being part of Trump's administration and he wouldn't get involved with MS right now anyways.