So what’s in store next season on Grey’s Anatomy? No one knows — not even the cast, apparently. Us is reporting Isaiah Washington, the F-slur-dropping doc who (spoiler alert) left Dr. Yang on their wedding day, “will not be back as a series regular,” according to a source. Washington’s rep denied the report, but acknowledged that the star doesn’t have a contract in place yet. Meanwhile, T.R. Knight, the target of Washington’s reported slur, isn’t sure if he’ll be back next year either. “I literally don’t know,” Knight told Access Hollywood. “If you’re supposed to report back to work in a month and a half, I would really like to know that ... because I would like to know if I can shave my head.” Knight’s character (spoiler alert) failed his intern test in the season finale, so no one knows what’s in store for him.