Assistant Head Coach Jim Caldwell would replace Tony Dungy if the Indianapolis Colts coach retires, team owner Jim Irsay said Thursday night. Irsay hopes Dungy will return and expects to speak to him this weekend, the owner said at a party celebrating an exhibition of the Jack Kerouac "On The Road" manuscript he owns at The New York Public Library. Irsay said he might be able to make accommodations for Dungy such as allowing him to attend his son's high school football games in Florida on Friday nights. But he has no doubt that Dungy's commitment will be "100 percent" if he continues coaching. "That's the type of guy he is," Irsay said. Otherwise, he said, "Jim Caldwell would be the guy."