Greg Case will be the Chief Executive Officer (CEO) of the firm that represents the combination of Aon and Willis Towers Watson, after the agreement will be completed. The new leadership team will "deliver new sources of value to clients and create new opportunities for colleagues", according to Aon press release.

"Aon and Willis Towers Watson have a unique opportunity to create a combined firm that will make an even greater difference in the global economy and provide unparalleled experiences for our clients and colleagues," declared Greg Case, Aon CEO. He also added: "This talented team draws on the best of both from each organization and will be critical to delivering on the high aspirations we have for the new Aon."

John Haley, CEO of Willis Towers Watson, said: "As we learned more about each other's organizations, it became clear that a fundamental driver of our success will be leaders who fully embrace a one firm mindset. The willingness to put the needs of clients and the entire organization ahead of their part of the business and any individual priorities will be the key to unlocking the full potential of the planned combination for the benefit of all our stakeholders."

In forming the new team, Christine Davies will serve as Chief Financial Officer (CFO) and Eric Andersen as President.

As soon as the proposed combination is completed, the new Aon Executive Committee will be focused on the innovation sector, finding new solutions and functions, but will also guide the worldwide teams working together by a one firm mindset.

Case added: "All of the leaders we are announcing today are highly accomplished and true advocates of the one firm mindset that will be at the core of the new Aon. We are confident that our combined firm, with this leadership team, will help us address the most pressing areas of client need and provide compelling new opportunities for our colleagues."