Former Philippine President Fidel Ramos has accepted a position as special envoy to China after an international tribunal ruled that Beijing's claims to much of the South China Sea had no legal basis, local media reports said Sunday.

Ramos reportedly accepted the offer to lead a team that will open bilateral talks with China when he met with President Rodrigo Duterte in Davao City on Saturday night.

"I have been cleared by my doctors at Makati Medical Center," Ramos, who revealed that he suffered from three serious ailments, including one that impaired the flow of blood to the brain, was quoted as saying.