In a new interview with THR, Allen explained the process of Owen Wilson-izing his Parisian movie:
"The lead was a more East Coast character in the original script (casting director) Juliet Taylor suggested Owen Wilson. I had always been a fan of his, but always felt that has a very West Coast persona. He belongs very much at home on a beach or with a surfboard. So I rewrote the script, making the character a West Coast character. I sent it to Owen and I was very lucky he wanted to do it. [...] I'm happy to [rewrite] if I can get an actor like Owen, who is a strong person to play something. Then I am perfectly willing to rewrite a character if I can rewrite it. Of course, there are some characters that you could never change. That would ruin the story. But very often you can adjust a character. If you have a strong personality, sometimes it requires an adjustment."
According to Stephanie Zacharek's review from Cannes, the rewritten script and Wilson's goofiness made for a genuinely heartwarming story -- the first for Allen in a few years now.
ยท CANNES Q&A: Woody Allen: I Rewrote 'Midnight' in Paris for Owen Wilson [THR]