A Greek exit from the euro zone could damage trust in the single currency said European Commission President Jean-Claude Juncker. He also tells the paper that if a country were to leave from the euro, "it would fix the idea in heads that the euro is not irreversible."

"I don't share the idea that we will have fewer worries and restraints if Greece gives up the euro," Juncker said, to convene with EU powerhouse Germany's Chancellor Angela Merkel and French President Francois Hollande on Monday evening. He said in an interview with German newspaper Sueddeutsche Zeitung that Greece would be on the agenda even if its not the main reason for their meetings.

This could provoke international investors to pull out of Europe, Juncker said. During his visit to Tokyo, Japan's prime minister made clear to him that Japan's contribution in Europe depended on having confidence in the euro. Juncker also called for the IMF to continue to support Greece even chief Christine Lagarde said that it was up to Europe to take safety measures if the EU wanted to saty away from the threat of a bankruptcy.

Greek Prime Minister Alexis Tsipras spoke with the leaders of France and Germany in their second conference call to tackle progress in between Athens and its lenders, said Greek officials.

Around 7.2-billion-euro ($7.8 billion) payment should be completed from the relieve plan that has kept their drifting finances for the last five years. Under other conditions, the country could be insufficient within weeks and crash out of the euro currency union.

On the other hand, a contract has proved subtle as the creditors are pressing higher reforms in return for the cash which Tsipras's government turned down to match. Tsipras also said his government has made concesions, including agreeing to execute a series of privatizations that has been previously conflicted.