A succession plan for a new Milwaukee Bucks’ general manager could happen one year sooner than projected. John Hammond is leaving after nine years as the Bucks’ G-M to take the same post at Orlando — where he’ll reunite with his former Milwaukee assistant Jeff Weltman who will become Hammond’s boss after Weltman was named Tuesday as the Magic’s president of basketball operations. The two also worked together with Detroit and the Los Angeles Clippers. Last summer, the Bucks brought in assistant G-M Justin Zanik with the likelihood that he would run the front office once a contract for the 62-year-old Hammond expires next summer — but Bucks ownership is not confirming yet whether the plan will take effect now. Owners Wes Edens, Marc Lasry, and Jamie Dinan called Hammond an “incredible asset and a true professional” as the Bucks made the playoffs four times with Hammond in charge, and he was named the N-B-A’s Executive of the Year in 2010.