Sacked GREY'S ANATOMY star Isaiah Washington will return to the hit medical drama - if writer/creator SHONDA RIMES asks him. The actor admits he's bitter about his departure from the show, but he'll jump at the chance to return for a cameo. He tells American magazine Entertainment Weekly, "Dr. Burke (his character) is probably the greatest challenge I've ever had. I've studied the medical world extensively. I gave it everything I had. "If Shonda calls me and says, 'Look, we want you to do something for Grey's Anatomy,' I probably would not hesitate. "But I don't really see that happening."