Telecom Italia (TLIT.MI) CEO Luigi Gubitosi has told its board that he is ready to step aside if that would help speed up a decision on a takeover approach by U.S. private equity group KKR, sources told Reuters on Thursday. KKR has made a 10.8 billion euro ($12 billion) offer in the midst of a boardroom row between Gubitosi and the former Italian telecoms monopoly's top investor Vivendi.