Credit: ABC

It doesn't surprise us that Grey's Anatomy boss Shonda Rhimes tweeted that Izzie (Katherine Heigl) is "probably not coming back to the show," but it does surprise us that she used the word "probably."

A Twitter fan recently tweeted the prolific TV producer, saying that she (or he) — damn ambiguous Twitter names! — spends "way too much imagining different versions of Izzie's return" and that Shonda "better not disappoint" her (or him).

Shonda replied, saying, "I totally won't. Um. Because she's probably not coming back."

So now we know that there is a chance, no matter how slim, that Shonda would welcome back Katherine Heigl.

Until now, we had assumed that that was a lost cause, considering Katherine was vocal about "really, really, really" wanting to reprise her role as Izzie — back before she landed a full-time gig on NBC's upcoming drama State of Affairs — and Shonda did nothing about it.

Who knows whether Shonda just didn't see fit to continue Izzie's storyline at the time or if she was feeling lingering resentment toward Katherine for her outspoken criticism of and abrupt exit from the show.

But hey, this is the same TV mastermind who brought Isaiah Washington (Preston Burke) back to the show, despite his behavior, so you never know what could happen.

Do you want Shonda to bring Izzie back to Grey's? Let us know in the comments below.

Grey's Anatomy Season 11 airs this fall.

Dan Clarendon is an assistant editor at Wetpaint Entertainment. Follow him on Twitter and Google+!