John Barrowman has revealed that he would be "disappointed" if he doesn't have a role in the Doctor Who 50th anniversary.
The 45-year-old actor, who currently stars in US action drama Arrow, hopes he can reprise his role as Captain Jack Harkness for the sci-fi show's special edition.
"I haven't been asked. I would love to if they asked me," he told the Los Angeles Times.
"Andrew Kreisberg (creator of Arrow) has already said to me if they want me in the 50th anniversary, he will give me the time off from Arrow to do it."
John - who played Captain Jack in the series and its spin-off Torchwood - added: "But it's not up to me. The fans keep asking me online and on Twitter. If I had an answer I would tell you, but it's not up to me. Personally, as a fan of the show, I would be disappointed if Capt Jack was not involved."
He has made no secret of his desire to return to Doctor Who, previously saying that he would "do it at the drop of a hat".
Head writer Steven Moffat has remained tight-lipped about the show's milestone, but promised it would be "immense".