Naftohaz currently has $500 million in Eurobonds due to be redeemed on Sept. 30 for new securities guaranteed by the state and due to mature in 2014. The discussions are being watched closely in Europe, as the last several years have seen disputes between Naftohaz and Russian supplier Gazprom lead to partial shutoffs of Russian natural gas exports, which transit Ukraine bound for Eastern Europe, that have caused significant disruptions.