The Lost in Translation star, who played Dr. Peter Venkman in the two Ghostbusters movies, admits he has a script for a third film - but he hasn't read it.
He tells U.S. radio host Howard Stern, "I guess I'm the problem. Before I was an asset, now I'm a problem. There's a script somewhere, but I haven't read it yet.
"I only made one sequel and it was Ghostbusters 2 and it didn't end up the way it was presented... but I owe him (Reitman)... He's puzzled that I haven't gotten to this one.
"I'll get to it... I gotta get to it. I feel bad... It's not the foremost thing in my mind, so I don't think about it. You know, the studio gets excited every 10 years or so. What they'd really like to do is recreate the franchise."