Kalidou Koulibaly has rejected claims he could quit Chelsea at the end of the season.
The former Napoli captain has battled for consistency in his first year in England.
Koulibaly told The Times: "I know I'm not one hundred percent yet, but I think I'm on my way to my level.
"Chelsea made a big decision in signing me and I really want to give back. I want to be part of this club for many years. This is not a season that Chelsea expected, but sometimes when you make big changes everyone needs time to adjust. But we know the ambitions here, and we will work hard to win back the supporters' trust."
Koulibaly has two goals and one assist in 30 games this season.
The centre-back's contract with Chelsea runs until the summer of 2026, with an option for another year.