MILAN (Reuters) -Italy’s top insurer Assicurazioni Generali will launch a 500 million euro ($540 million) share buyback plan this year, it said on Tuesday, confirming its focus on returns to investors. The group is on track to meet all the key financial targets of its strategic three-year plan ending in 2024, it said in a statement. Under the plan, Generali aims for average annual earnings per share (EPS) growth of 6-8% and to pay up to 5.6 billion euros in dividends. Last November, CEO Philippe Donnet said that the company had 500 million euros left of the 3 billion euros earmarked for M&A de…