UniCredit may make announcement soon on CEO Mustier's future - sources

MILAN (Reuters) - Italy's biggest bank UniCredit may make an announcement as early as Friday night on the future of boss Jean Pierre Mustier, two sources familiar with the matter said, after reports he is vying for the top job at rival HSBC .Shares in UniCredit fell 3.9% on Friday, underperforming a 2.3% drop in Italy's banking index , after Bloomberg News first reported Mustier was a leading contender.A third source familiar with the matter confirmed earlier on Friday Mustier was a candidate..