(Telecompaper) Telefonica has added several banks for the forthcoming listing of its global infrastructure unit Telxius, which could raise up to EUR 4-5 billion, according to unnamed sources cited by Bloomberg. Spain's CaixaBank and Banco Bilbao Vizcaya Argentaria have been added as global coordinators for the IPO, along with Goldman Sachs Group and JPMorgan Chase, said the sources. Mediobanca, BNP Paribas, HSBC, Banco Santander, Citigroup and UBS Group will act as joint bookrunners for the IPO, added the sources. The share sale could take place as soon as July, with Telefonica keen to reduce its EUR 50.2 million debt after European Union anti-trust regulators blocked the GBP 10.3 billion sale of its O2 UK business earlier this month.