President Muhammadu Buhari played host to Bola Tinubu, National Leader of the All Progressives Congress (APC) in Aso Rock on Sunday.
Both men held a closed-door meeting.
At the end of the meeting, Tinubu said he was at the presidential villa to thank the president for visiting him in London where he sought medical treatment.
“I came to thank President Muhammadu Buhari for visiting me in London when I had knee surgery. He demonstrated empathy. He is an exceptional leader,” he said.
Newsmen had reported how Buhari visited Tinubu in London in August.