The 73-year-old 'Star Trek Generations' star said that there might be some plan for him in the hit sci-fi franchise, reported Metro online.
"I don't see why not. That is one of the blessings about fantasy and science fiction. You're never really dead. I would love to come back and do some more," he said.
"There might be something else. A little bird whispered that there might be something X-Men related," he added.
Stewart will reprise his role as Charles Xavier in the upcoming X-men sequel 'X-Men: Days of Future Past' which is releasing on May 22.