With Fox rumored to be considering a reboot, Jennifer Lawrence's days as Mystique in the "X-Men" franchise are probably over. However, that doesn't mean the Oscar winner wouldn't consider suiting up as the mutant shape-shifter for another movie.

While promoting "Passengers," the romantic sci-fi thriller in which she stars opposite Chris Pratt, Lawrence was asked whether she'd like to have a cameo in "Guardians of the Galaxy Vol. 2."

"Oh, my God, I would love to," she told MTV International. "I actually don't even know -- I would choose that over doing another X-Men movie." With that little dig, Lawrence shared a laugh with Pratt before adding, "I won't be Mystique in the X-Men movies, but I would love to be Mystique in 'Guardians of the Galaxy.' I wonder if I can do that?"

The answer is probably no, as Fox holds the film rights to the X-Men and doesn't have the chummy relationship with Marvel Studios that Sony now enjoys. (That said, Fox and Marvel did agree to a character swap that benefited both "Deadpool" and "Guardians of the Galaxy Vol. 2.")

However, Pratt -- apparently well versed in contract law -- believes Lawrence's cameo is now required. "Whoa," he told his co-star. "You did just happened. This is a binding legal contract." He then sealed the deal with a handshake.

If you sense that Lawrence may be over the X-Men films, you're not alone. While playing a game of "Playground Insults" with Lawrence recently on BBC Radio 1, Pratt asked, "How does it feel being in the stupidest Marvel movie?," which drew laughs -- but no answer -- from his co-star.

Fox is reportedly in talks to reboot its X-Men series following the disappointing commercial and critical response of "X-Men: Apocalypse," with franchise producer Simon Kinberg forging a new course for the films. Bryan Singer, who directed 2000's "X-Men" and 2003's "X2," and then returned to steer 2014's "X-Men: Days of Future Past" and this year's "Apocalypse," is apparently out. Although stars Lawrence, Michael Fassbender, James McAvoy and Nicholas Hoult completed their three-picture contracts, Kinberg is said to be writing a script with them in mind. Judging from Lawrence's comments, however, he may want to start a new draft.

Written and directed by James Gunn, "Guardians of the Galaxy Vol. 2" stars Chris Pratt, Zoe Saldana, Dave Bautista, Vin Diesel, Bradley Cooper, Michael Rooker, Karen Gillan, Sean Gunn, Glenn Close, Pom Klementieff, Elizabeth Debicki, Chris Sullivan and Kurt Russell. The film opens May 5, 2017.