Plans to turn hit JACK LEMMON and WALTER MATTHAU movie GRUMPY OLD MEN into a stage musical have been given the green light after producers found a writing team. The Broadway, New York-bound project will now feature music and lyrics by NEIL BERG and NICK MEGLIN. Producer JEFF GARDNER claimed the rights to the 1993 film last summer (05) and he has been trying to get the project off the ground ever since. The stage show, featuring the exploits of two elderly romantic rivals, is slated to make its Broadway debut early in 2008.