Greek finance minister Euclid Tsakalotos says the country is near to securing a new bailout agreement, possibly within the day.
Mr Tsakalotos emerged from night-long talks with bailout negotiators at a central Athens hotel.
He told reporters that discussions have "moved very far forward" and that "two or three details remain". He did not provide further details.
Greece's government is hoping to push the new €85bn three-year agreement through parliament this week.
However, many in the ruling left-wing Syriza party are voicing their opposition to the deal, which would see the imposition of further spending cuts among a series of austerity measures.
Figures next week are set to confirm that Greece's recession deepened in the second quarter as concerns over the country's euro future dented confidence.