Here’s how this came about, from an interview with Examiner reporter Carla Hay:
I know you get asked this question a lot, but I’ll ask anyway: Will there be a fourth “Narnia” movie?
Johnson: Keep in mind that the two youngest Penvensie kids, Lucy and Edmund, don’t come back, so the next movie will have Eustace. We could do “The Silver Chair” or we could do “The Magician’s Nephew.”
Which book do you think fans want to see more as the fourth “Narnia” movie: “The Silver Chair” or “The Magician’s Nephew”?
Johnson: That’s a really good question. I couldn’t tell you. We should put it to the fans [to decide]. I know we have to do “The Magician’s Nephew.” I love that book! The question is: “Do we do it now and let our Eustace grow older? Or do we do ‘The Silver Chair’ and then do ‘The Magician’s Nephew’?”
So, what’ll it be, fans?