Originally Posted by Blitzkrieg Bop
I know, but you can't tell me that the Marvel fanboys-in-charge, Feige and Whedon, aren't playfully tossing the idea back in forth like two geeks in a comic book store after securing a place in the Avengers lineup for Magneto's kids. It's not impossible for Disney to make some sort of deal with Fox. They just bought Star Wars, so it leaves me with an impression they're out to get what they want and go big.
If X-Men starts doing massive box office also (maybe from DOFP onwards), an Avengers-X-Men film would be as safe as a new Star Wars film. It would not take much for a deal to happen then if both parties wanted it. If I was Disney/Marvel I'd offer Fox a cut for doing nothing just to be able to make that film. A zero risk return which would boost the future of the X-Men films and add significant franchise value to Fox, again for doing nothing and taking no risk