By this he becomes the highest paid Nigerian player in Europe.
The 26-year-old player has established himself as a regular in the side this season, playing an integral role in the club’s pursuit of silverware under Italian gaffer, Antonio Conte.
The two-year extension deal will see him stay at Stamford Bridge until 2021.
He said after signing the contract, “I feel very excited. I’m delighted to be here for another few years now and to sign a new deal. Now it’s time to concentrate on the team and keep working hard to make sure we win games and try to win the Premier League this season.
“We’re having a great season, I’m enjoying my football and we have a good manager here that has given every single one of us confidence. I just want to keep on enjoying it and working hard for the team.”