Greece is not prepared to pass legislation now for measures that will go into effect in 2019 and has made this abundantly clear, Finance Minister Euclid Tsakalotos said in an interview with the Sunday edition of the Athens-based daily "Ethnos".

Eurozone sources said on Wednesday they evaluated positively Greek Finance Minister Euclid Tsakalotos' letter to the president of Eurogroup Jeroen Dijsselbloem and to ESM chief Klaus Regling.

A letter by finance minister Euclid Tsakalotos to creditors has raised a flurry of protests and parliamentary quirps as opposition MPs accused the minister he was hiding the letter from the public.