"No, no, no," he told PEOPLE when asked about his role in the upcoming Star Wars: Episode VII. "I can't say anything."
The Irish actor, 31, was in Orlando, Florida, for the VIP and media preview of the new Wizarding World of Harry Potter – Diagon Alley. (He played older Weasley brother Bill in the films.) Some fans have speculated that he will be playing Luke Skywalker's son in the new trilogy.
Also in attendance: Warwick Davis, who played Ewok Wicket in the original Star Wars trilogy and likewise appeared in the Potter films. (He did double duty as Professor Flitwick and Griphook the goblin.)
Davis, 44, says he recently visited the famed Pinewood Studios outside London, where the film is now shooting – and he's hoping for a role in it.
"It was exciting going to Pinewood," he says. "There's a big sign on the wall that says, 'Episode VII Filming Now.' What a wonderful thought that everybody's back together, the classic cast and some brilliant new additions as well. I'm a fan anyway – I was back when I was 7. I would love to be in the new film. I've dropped a lot of hints!"