Prime Minister Antonis Samaras will meet Foreign Minister Evangelos Venizelos at 12.30 p.m. on Friday.
The two are expected to discuss Venizelos's visit to Turkey where he will hold talks with his Turkish counterpart Mevlut Cavusoglu on Saturday.
Venizelos, who is also Greece’s deputy premier, is further scheduled to meet with Turkish President Recep Tayyip Erdogan.
The visit comes amid tension over energy spoils in the Eastern Mediterranean region.
On Sunday, Venizelos will attend the Thronal Feast of St Andrew the Apostle at the Ecumenical Patriarchate in Istanbul. Pope Francis is also scheduled to attend.