Harry Potter star Daniel Radcliffe has backtracked over comments he made about reprising his famous character, insisting he is open to a return to J.K. Rowling's magical world in a planned boy wizard prequel.

The actor admits he has not been approached about joining the cast of Rowling's screenwriting debut Fantastic Beasts and Where to Find Them, but he reveals he would consider taking on a lead role if the author writes him into the film.

He tells The Hollywood Reporter, "I don't think I'm going to be coming back, we can't be doing these characters when we're 40, so there has to be a line drawn.

"(However, it could happen) because I never know what Jo (Rowling) is going to write, but, at the moment, I'm in the same position that everyone else is in - waiting to hear what information is coming out because I don't know anything about these new films... I'll be intrigued to see what she does."

Rowling has confirmed reports her new film project will take place decades before her Potter book series.

Radcliffe adds, "If time travel rears its head again, I'll be intrigued to see what she (Rowling) does."