Nello Balan‘s right-hand man is striking out on his own. Zach Erdem, who served as general manager of both Nello on Madison Avenue and Nello Summertimes in the Hamptons, is leaving to take over 75 Main, the venerable Southampton eatery. A source familiar with the deal tells us Erdem’s new place doesn’t yet have a name, but it will serve Italian. Reached for comment, he told us he’s excited about “creating a venue that will become another staple venue to the Hamptons and worldwide.” A receptionist at Summertimes said no replacement for Erdem has yet been hired.