Thiago Silva signed a one-year contract extension with the club.
Silva joined the Blues in the summer of 2020 after the end of his Paris Saint-Germain contract, and has become a regular at the centre of the Blues' defence.
He has made 22 appearances for Thomas Tuchel's side this season, scoring two goals and assisting two more.
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Antonio Rudiger, who is out of contract in the summer, is said to be a target for Real Madrid, Paris Saint-Germain, and other clubs.
Silva has helped win the European Super Cup and the European League.
Silva spoke to the website after signing his deal and said it was a pleasure. I'm very happy to stay for another season because I never thought I'd be here for three years.
I would like to thank my family, the club, Marina, and Mr. Roman Abramovich for this opportunity.
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I will give everything for this club and for the fans who have supported me since I arrived.
It's amazing to have a relationship with the fans and the whole club. I'm going to do everything I can to keep playing in the most important league in the world.
"Thiago Silva's experience, leadership and performances have been and remain very important to this squad, so we are hugely pleased to extend his contract by another year," said Granovskaia.
"We look forward to his continued influence as we seek honours this season and next, and more of the qualities that have led to him having such a big impact for us on and off the pitch."
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Real, Paris Saint-Germain, Bayern and Juve are all open to speak with Rudiger.
Antonio Rudiger's representatives have begun talks with several European clubs over a pre-contract agreement.
The brother of the defender's agent is also an admirer of the Manchester United interim manager, who will take up a consultancy at Old United in the summer.
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Antonio Rudiger, who is out of contract in the summer, is said to be a target for Real Madrid, Paris Saint-Germain, and other clubs.
After the end of the season, he is free to talk to foreign clubs about a possible move, but he will have to wait until the summer.
The German international's camp has not ruled out the possibility of him remaining at the club.
At the start of the season, the Blues' most recent offer was rejected by the player and his representatives as it promised to pay him only half of what the club's top earners make.
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