The Greek Prime Minister Alexis Tsipras has outlined new proposals aimed at ending his country's debt crisis, a day before an emergency summit in Brussels.
Meanwhile, anti-austerity protesters have gathered in Athens.
In a telephone call with German chancellor Angela Merkel, French president Francois Hollande and European Commission president Jean-Claude Juncker, Mr Tsipras unveiled the proposals on a "mutually beneficial deal", his office said.
It said the plans were aimed at reaching a "definitive solution" to the standoff between Athens and its creditors - the European Commission, International Monetary Fund and European Central Bank - amid growing global concern over a potential "Grexit" from the eurozone.
Pressure is mounting to find a way of preventing Greece finally defaulting on its debt repayments due at the end of the month, with an emergency summit of the leaders of the 19 eurozone countries due on Monday in Brussels.
Greece's anti-austerity government met on Sunday to refine its proposals.
If there is no deal, Greece seems likely to default on an IMF debt payment of around 1.5 billion euros due on June 30, and with that risk a chaotic exit from the eurozone.
The details of the proposals were not disclosed, but Greek minister of state Nikos Pappas, who is close to Mr Tsipras, told the Ethos newspaper that his country did not want any more help from the IMF.
"I am one of those who think that the IMF should not be in Europe. I hope we find a solution without its participation," Mr Pappas said.
He claimed that Europe "has no need" of the Washington-based institution, which has an "agenda which is not at all European" and "can continue without it and its money".
The IMF was called in to help rescue Greece at the end of 2009 when the debt-plagued country could no longer borrow on international markets.
The EU's involvement in the huge bailout, which was to provide 240 billion euros in loans in exchange for drastic austerity measures and reforms, runs out at the end of this month but IMF support was to supposed to continue to March 2016.
Talks between Greece and its lenders have been deadlocked for nine months over the payment of the next 7.2 billion euro tranche of the bailout, with talk also turning to an extension of the European help.
For the Greek government any extension of the bailout should be about kickstarting the country's devastated economy and not further austerity.
They also want the country's crippling debt burden - of nearly 180 per cent of GDP - lightened.
"The agreement should be of a type and timeframe so that it would restore confidence," Mr Pappas told the newspaper.
"It shouldn't be short-term, which would only lead to further uncertainty."
Proposals from Athens have previously been knocked back by their creditors who have insisted on their own mixture of cuts and reforms, which Mr Pappas dismissed as "unacceptable to whichever Greek political party" was in power.
Mr Hollande, speaking in Milan, said France and Italy shared a "common position" on the Greek crisis, which was "to have an agreement and the sooner the better".
Demonstrators around Europe on Saturday took to the streets to protest against spending cuts and austerity measures taken by their governments and expressing solidarity with Greece.