Matic told Sky Sports: “I spoke with the club and we both decided that it was best for the club and for me to stay.
“I'm very happy because I'm now here with this team and this club. I will give my best and all my quality to help the team to challenge for the title.
“As I said, I'm very happy to be here. I want to improve my game and I'm sure Conte is the right coach to do that."