LOS ANGELES: Usher is not returning to 'The Voice' USA next season. The 'Scream' hitmaker - who replaced Cee Lo Green on the judging panel of the reality TV show this year - has signed on to star in a movie so is unable to renew his contract with the NBC series. A source said: ''Usher is doing a movie, so he couldn't do season five if they wanted him to.'' Cee Lo, 38, is expected to take back his spot from the 34-year-old singer and return to the series alongside Adam Levine, Blake Shelton and Christina Aguilera.–ES