This separation has led to Marvel not being allowed to mention “mutants,” which complicated things when they introduced Quicksilver (Aaron Taylor-Johnson) and Scarlet Witch (Elizabeth Olsen) in Avengers: Age of Ultron.
However if it is, it should be comforting for fans to know that Taylor-Johnson would be happy to return.
Fox made a splash with Evan Peters as Quicksilver in X-Men: Days of Future Past, but Taylor-Johnson’s involvement was cut short.
Moving forward in the MCU, there are possible ways for Taylor-Johnson to reprise his role, either living or not.