Russian President Vladimir Putin will receive, Monday, his Turkish counterpart Recep Tayyip Erdogan, the Kremlin announced on Friday.
The main aim of the visit is to urge Russia to return its grain deal and to ensure a safe passage for grain exports, mainly wheat.
Russia pulled out from the UN-backed grain agreement which threatened the safety of the grain shipments due to the ongoing fight between Russia and Ukraine.
Kremlin Spokesperson Dmitry Peskov told reporters: "Negotiations will indeed take place in Sochi on Monday."
Moscow's statement came shortly after Ukraine announced the sailing of two more ships were sailing through the Black Sea.
Ukraine's Infrastructure Minister Oleksandr Kubrakov said on social media: "Two vessels are sailing through a temporary corridor from Ukraine's Black Sea ports to the Bosphorus."