Tom Selleck is in negotiations to return to TV as James Caan's replacement in hit drama Las Vegas. The former Magnum, P.I. star is in talks to play a casino owner on the show. His character is designed to fill the void left by the departure of Caan, who recently announced he wouldn't be returning for a new season of the show earlier this year (07). Josh Duhamel and model/actress Molly Sims are expected to return for the fifth season of the show.