Based on the progress made thus far in the negotiations between Greek authorities and the institutions representing the creditors (European Central Bank, European Commission and International Monetary Fund), the two sides could be ready for an agreement by the end of the month, Greek government sources said on Thursday.

Cash-strapped Greece should be allowed to leave the eurozone temporarily, Hans Werner-Sinn, the president of Germany’s influential Ifo Institute for Economic Research, told CNBC on Thursday.

Developments concerning the Greek issue are rapid. This follows after a leaked internal document of the Conference of Presidents of political groups in the European Parliament.