T.R. Knight, who plays George O’Malley on Grey’s Anatomy, has asked to be written off the hit medical series. According to People magazine, a source says it’s likely Knight will be released from his contract at his request. Apparently Knight is unhappy with his storyline and the lack of screen time for his character. “It’s time to move on,” says the source. “It just feels like this is the right time to go.” Knight, who’s openly gay, may also be upset with producers for abruptly writing Brooke Smith, who played a lesbian character, off the show earlier this season.