He totalled 169 appearances in Ligue 1 and was twice named in the competition's Team of the Year.
In 2017, he joined Tottenham for a fee of around £23 million.
He made his international debut for the Ivory Coast in 2013 and has earned over 50 caps.
He represented the nation at the 2014 FIFA World Cup and three Africa Cup of Nations tournaments, winning the 2015 edition.