Katherine Heigl 'could return to Grey's'

The details of Katherine Heigl's departure from Grey's Anatomy are reportedly still being discussed.

Earlier this week, reports claimed that Heigl has been released from her contract after she failed to return to work following her maternity leave.

Insiders have now told People that it is still unclear whether or not Heigl will return to the show.

"The details, the timeline of that - it's all shades of grey," a source explained. "The terms of her exit are still being sorted out.

"You can always have her return in a compelling way, and leave in an equally compelling way, because [creator] Shonda [Rhimes] could certainly write that. It's just not clear if she'll come back onto the canvas this season, for a farewell arc, or if her storyline is already done."

Representatives for ABC Studios declined to comment.