Kone has signed a contract that will keep him at the Stadium of Light until the summer of 2020.
The Ivorian defender has moved to the Black Cats for an undisclosed fee.
Sunderland have completed the signing of Lamine Kone – https://t.co/EjvABMyigj pic.twitter.com/2fb26gCHFt
— Sunderland AFC (@SunderlandAFC) January 27, 2016
