(Reuters) – In the biggest management reshuffle at Microsoft Corp since Satya Nadella took over as its chief executive, two top executives, Tony Bates and Tami Reller, will leave the company while a former Clinton family aide will become its chief strategy officer, according to media reports. Mark Penn, who will become chief strategy officer, will get a bigger hand in determining which markets Microsoft should be in and where it should be making further investments, the New York Times reported, citing a person briefed on the change. Penn was an executive vice president at Microsoft overseeing advertising and strategy.