Argentina defaulted on its debt last month after a New York court prevented the country from paying interest to bondholders unless it first compensated the hedge-fund holdouts that are demanding repayment in full.
Some analysts warned even if bondholders accepted the swap offer the manoeuvre could carry legal risks.
“Argentina could end up in contempt,” said Alejo Costa, strategy chief at the Buenos Aires investment bank Puente, referring to the original US court order forbidding interest payment.