Chief spokesman Margaritis Schinas is slated to fill the post of European Commission vice president, sources have told Kathimerini.
Schinas will become the first Greek to hold such a high-ranking position in the European Commission's top decision-making body.
The move is also seen as a vote of confidence in the new center-right New Democracy government in Athens.
There are two main types of ministers and officials in the recently elected Greek government. On one hand, there are those who were picked by voters or have long served the conservative party and, on the other, those who were not elected but instead recruited by the prime minister because he believed that they were best suited for the job.
The center-right government on Friday approved in Parliament changes to the criteria for appointing the director of the National Intelligence Service (EYP) - a move aimed at ensuring that the official undertaking the role has adequate professional experience but which provoked angry protests by the opposition.
The Environment Ministry aims to review plans for waste management in Attica and at the national level, Kathimerini understands, though certain critical projects - such as the extension of the capital's main landfill - are to continue as scheduled.
The new plans will be drafted on the basis of proposals by the Attica regional council, which is expected to convene in due course.
Greek Parliament passed a bill on Monday that will incorporate a European Union data protection regulation into Greek law, with an overwhelming majority.
The legislation was approved by New Democracy, main opposition SYRIZA, the center-left Movement for Change and leftist MeRA25. Communist party KKE and nationalist Greek Solution voted against.