Updated BRIEF-CEO Of Spain's Santander Says Has Capacity To Undertake Share Buybacks, Is Not Contemplating Doing Bold Aquisitions By Reuters Staff July 28 (Reuters) - Chief Executive Officer Of Spain’s Santander, Jose Antonio Alvarez: * SAYS HAS CAPACITY TO UNDERTAKE SHARE BUYBACKS, IS NOT CONTEMPLATING DOING BOLD AQUISITIONS Source text for Eikon: Further company coverage: (Reporting By Madrid Newsroom)