Russell T Davies has apparently turned down repeated offers to return to Doctor Who.
The Queer As Folk writer revived the hit sci-fi series in 2005 before handing over to current writer Steven Moffat in 2010.
Steven has claimed in an interview conducted at LA's Gallifrey 2013 convention that he keeps trying to persuade Russell to come back to the show.
Steven insisted: "I do keep asking him [to write a new episode]. The offer is continually made and I'm getting nowhere!"
He added he would have Russell back on the show "like a shot", calling him "the best writer breathing".
Steven said: "I think he probably did his duty... for Doctor Who so he's maybe wanting a nice long rest from it."
Russell has ruled out the possibility of returning to Doctor Who for the show's 50th anniversary later this year, as he wants to enjoy watching it as a fan.
He said previously: "I have asked current boss Steven Moffat not to tell me what they are planning."