As "Grey's Anatomy" season 10 prepares to say goodbye to Cristina, the first photo featuring Sandra Oh and Isaiah Washington.

TVLine reports that Isaish Washington will return for one episode in May, although how that will figure into Cristina Yang's exit from "Grey's Anatomy" season 10 remains a mystery.

Now that Cristina is no longer with Owen, could the return of Preston Burke be the reason the doctor leaves Grey Sloan Memorial Hostpial?

As fans remember, Isaiah Washington was effectively "fired" from "Grey's Anatomy" at the end of season 3 after a whirlwind of controversy surrounding the actor and T.R. Knight.

Just today, actor Isaiah Washington posted a photo with Sandra Oh, possibly in-character as Preston Burke and Cristina Yang.

Isaiah Washington tweeted this pic with #sandraoh pic.twitter.com/xfnAjgjJ6u

— arabella (@philosophy1988) April 24, 2014

Filming for "Grey's Anatomy" season 10 has recently wrapped, and a host of photos of Sandra Oh celebrating and posing with cast members have surfaced.

“It’s important to me that Cristina’s journey unfolds exactly as it should,” says 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.”

Spoilers confirm that in addition to Sandra Oh, series regulars Gaius Charles and Tessa Ferrer will leave "Grey's Anatomy" season 10.