Is Michelin-starred chef Thomas Keller scouting for space in the Meatpacking District to add to his famed restaurant collection, which includes Per Se in the Time Warner Center and the French Laundry in the Napa Valley? Keller and three pals dropped in for dinner at the iconic Old Homestead Steakhouse; afterward, a spywitness says, he was telling a management type about his longtime interest in the area. Keller also signed autographs and worked the room like it was his own. You can take the chef out of his restaurant, but you can’t take the restaurant out of the chef.