Former 49ers President Carmen Policy has just been recruited by Mayor Gavin Newsom to lead the city's effort to keep the team from exiting for the South Bay - bringing the veteran football executive's long journey to build a stadium in San Francisco full circle. Policy headed the $100 million bond measure drive in 1997 that would have helped pay for a stadium at Candlestick Point. The voters approved it, but the stadium never got built. Now Charmin' Carmen will serve as San Francisco's go-between with the Niners and the National Football League. He will also help lead a referendum headed for the ballot next June to allow construction of a stadium at Hunters Point, along with a housing and retail development at neighboring Candlestick Point. "I consider it unfinished business," Policy said of the assignment. "I'm absolutely thrilled Carmen will be joining our team," Newsom said. "Carmen's track record speaks for itself."