I've bee looking for info about this, but haven't found anything.
It was a rumor that I read years ago, in a conan comic article (like 15 years ago). It said that some director was thinking about Arnold as the actor who would play ATTILA in a biopic he was going to make.
Of course it was never filmed but now I wonder who that director could have been and if that project could have even started. It could have been also just bullshit from the guy who wrotte that article.
Some years later there was another rumour about Arnold in a Crusades movie of paul Verhoeven. But there's plenty info about that one in the web.
Apparently, beyond that black and white comic scene of "Hamlet" in the "Last action hero", the austrian dude didn't hold a sword in a movie since "Sonja". Right?
Do you know something about that Attila shit?