Rain, who draws a huge audience throughout Asia with his sculpted body and dance moves, is "in positive" negotiations with the filmmaker, said the manager, who spoke on condition of anonymity because the deal was not yet completed.
He said Rain's participation in the movie - based on "Mach Go Go," a 1960s Japanese animated series about car racing - will be announced "soon." He declined to give further details.
Rain, whose real name is Jung Ji-hoon, played a lead role in the 2006 South Korean film "I'm a Cyborg, but that's OK" directed by Park Chan-wook.
Russia has left the list of 33 largest holders of US government bonds, after the country disposed of at least a third of remaining bonds