A source with knowledge of the situation says the fallout was over a specific money demand. Willis was offered $3 million for four days of consecutive work on location in Bulgaria for the film. "He said he'd drop out unless he got $4 million," this source close to the production says. "A million dollars a day. Stallone and everybody else involved said no."
Oh well... he can continue to make his stupid Die Hard sequels and he is locked in for GI Joe 3. I remember that episode of "Between Two Ferns with Zach Galifianakis" where Zach asked Bruce, "Did you know that some actors turn down roles?" Good for him! lol
It was reported a while ago already that Fox would try to do a reboot/relaunch of the Fantastic Four. Regardless of the actual story, they would use new actors. If they wouldn't make another movie, they'd lose the rights to make it. (see also: