LeBron James took over The Darby the other night to toast his business manager and childhood friend, Maverick Carter. The Miami Heat star brought in a marching-style band and hamburgers from their hometown of Akron, Ohio, for the 50-person-seated birthday dinner at the supper club attended by Warner Music CEO Lyor Cohen, Jay-Z and Gayle King. “LeBron was very particular about the details,” a source said. “He sees Maverick as a brother.” James later last week took advantage of the NBA lockout and jetted to Liverpool, England, to check out his investment in the city’s soccer team. He was spotted touring the stadium and is expected to attend a game.