Café Gray’s days at the Time Warner Center may be numbered, sources tell us. It’s not clear whether the move, if it comes, stems from the building’s sky-high rent (which doomed Jean-Georges Vongerichten’s V Steakhouse) or because the chef has something else planned. Kunz, for his part, denies that he is going anywhere. "This rumor is completely unfounded," he says, "and business has been brisk." So if Café Gray does vacate, who can handle the tower? We hear a prominent Italian restaurant will fill the Café Gray space. You'll know more when we do.