(Telecompaper) Latin America mobile operator NII Holdings, which operates under the Nextel brand, has put up for sale its Argentina business, Infobae reports, citing unnamed sources with knowledge of the matter. According to a Nextel senior executive speaking off the record, there are already three potential buyers interested in the Nextel acquisition, including Eduardo Eurnekian's Corporacion America, Exolgan's owner Alfredo Roman, and investment fund Fintech Advisory managed by David Martinez.