Russian President Vladimir Putin and Turkish President Recep Tayyip Erdogan may hold talks on the sidelines of the Shanghai Cooperation Organization (SCO) summit in China, a Turkish diplomatic source said.
"Considering the personal relations between the leaders, there is a possibility of a meeting, greeting, and a conversation 'on the feet'," the source said.
It is not yet clear whether the encounter would be a formal negotiation or an informal exchange.
Erdogan is expected to attend the summit, while Putin will travel to China for a four-day visit that includes high-level talks with Chinese officials.
The SCO summit will be held in Tianjin from August 31 to September 1.