10 Perfect Movie Ideas To Bring Harry Potter Back
9. Harry Potter And The Cursed Child
They may already have shut down the idea of adapting The Cursed Child for the big screen, but doing so would be the easiest option to bring Daniel Radcliffe back and you should never under-estimate a film studio's capacity for following the easy money.
Having Harry return in a story that doesn't centre entirely on him, but which explores all of the lose end and the legacy of the original series would be a pretty smart move, and the plot of The Cursed Child would work incredibly well as a movie. It is actually a very cinematic story as it is, but Warner Bros would presumably have to work hard to convince Rowling to do it.
The other advantage, of course, is that the play already has an established audience, just as the books did originally, and the ticket sales would reflect an existing box office projection for the movie. It's not even close to being a gamble.