A sequel to SUPERMAN RETURNS is in the works after director Bryan Singer signed on to make the next movie in the superhero franchise. Recent reports suggested there would be no follow-up to the Brandon Routh-starring movie because Superman Returns didn't take as much as was hoped at the international box office. However, while a sequel may be in the works, studio Warner Bros is cutting the movie's original budget of $260 million (GBP140 million) down to between $140 and $170 million (GBP75 and GBP93 million), writes website Moviehole.net.