Jay-Z had a billionaire breakfast Wednesday over Mike’s house. Oh, that’s Mike as in New York City Mayor Michael Bloomberg. Also present at Gracie Mansion was real estate developer Bruce Ratner, and NJ Nets majority owner Mikhail Prokhorov. So, this is what Jay meant by being “already home.” Needless to say they were discussing bringing the Nets to Brooklyn, and Mikhail even offered the Nets coaching job to Mayor Bloomberg! And you though the Sixers were having some issues! Check out the pics from the breakfast….