If the deal gets finalised, Heaton will play Sam Guthrie, also known as Cannonball, a teen who propels himself into the air and is invulnerable while doing so, according to The Hollywood Reporter.
Anya Taylor-Joy and Maisie Williams have already signed up for the ensemble young adult superhero movie being directed by Josh Boone.
Taylor-Joy will play Illyana Rasputin, code-named Magik, a girl who has learned sorcery and uses teleportation discs to travel, while Williams will portray Rahne Sinclair, aka Wolfsbane, a girl struggling to reconcile her religious beliefs with her power to turn into a wolf.