UPDATE 3-UniCredit offers investors $2.2 bln buyback as staff face further cuts <!-- no image --> <div>* CEO Jean Pierre Mustier rules out M&A (Releads, adds details, comments)<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=PEmBpg2X6mY:0wPH2N6B_c4:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?d=yIl2AUoC8zA" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=PEmBpg2X6mY:0wPH2N6B_c4:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=PEmBpg2X6mY:0wPH2N6B_c4:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=PEmBpg2X6mY:0wPH2N6B_c4:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=PEmBpg2X6mY:0wPH2N6B_c4:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/PEmBpg2X6mY" height="1" width="1" alt=""></div> Posted by Reuters