"Steven Spielberg and I now have a script in hand that we both like," Ford told Germany's Fit for Fun magazine. "I believe that we can start with the filming soon."
Ford, 63, did not give a start date, however, E! Online said.
Ford said he, Spielberg and producer George Lucas will have to coordinate their schedules before any "Indiana Jones" work could commence.
He added he still needed to make some preparations of his own, like "a little practice with the whip."
Ford is currently out promoting "Firewall," his first action thriller since 1997's "Air Force One."
Puzzle-maker slips 'Murdoch Is Evil' into Rupert Murdoch's Sunday Telegraph
Exploding whale video goes viral on Internet