Isaiah Washington is set to reprise his GREY'S ANATOMY role as Dr. Preston Burke in one May episode, TVLine is reporting. Preston left his fiancĂ©e, Cristina Yang (Sandra Oh), on their wedding day at the end of Season 3, after Washington was fired from the series. "It's important to me that Cristina's journey unfolds exactly as it should," said series creator Shonda Rhimes in a statement. "Burke is vital to that journey — he gives her story that full-circle moment we need to properly say goodbye to our beloved Cristina Yang."