Deadpool played by Ryan Reynolds will be the only FOX X-Men mutant character to jump into the Marvel Studios Cinematic Universe.
When Disney bought FOX, all of the comic book characters whose rights they owned returned to Marvel Studios. The plan is that they will reset all but one. So the new mutants of the X-Men and the Fantastic Four will have nothing to do with what we’ve seen so far. However Ryan Reynolds will return to play Deadpool in a third installment. So it will be interesting to find out how they will introduce you to this Cinematic Universe.
It was recently confirmed that Ryan Reynolds has visited Marvel Studios, but for now nothing is known about the plans for Deadpool 3. Phase 4 releases of Marvel Studios have already been set, but there is no sign of the X-Men. or the Fantastic Four.
This is explained by the actor himself.
In a recent interview about his upcoming movie Free Guy, Ryan Reynolds was asked what Deadpool has in store for him in the future, and he apparently chose his words carefully.