Bain, which has owned Japan's biggest call centre operatorBellsystems24 since 2009 and recently invested in Genpact, theworld's largest business processing outsourcer, is interested inAtento's strong presence in Latin America, and will look toexpand its client base, the source said. DEBT HELP The sale will help Telefonica on its way to raising the 7billion to 8 billion euros a year through to 2015 that it needsto cope with debt repayments. The company is also preparing to spin off its German O2 armand has said it is considering listings in Latin America. Shares in Telefonica were flat at 10.185 euros by 1445 GMT,outperforming Spain's blue chip index. The telecoms group had hoped to raise up to 765 millioneuros in a flotation of Atento last year, which would have givenit an equity valuation of between 1.16 billion euros and 1.5billion euros at the original price range it was aiming for.