Chelsea are reportedly preparing to open contract talks with Antonio Rudiger, Andreas Christensen, N'Golo Kante and Jorginho in the near future.
Central defenders Rudiger and Christensen have been important players for Thomas Tuchel since his arrival as head coach, but the duo are both out of contract next June.
Midfield pair Kante and Jorginho, meanwhile, will both see their current deals expire in June 2023.
According to Italian journalist Fabrizio Romano, the Blues have meetings scheduled to discuss contract extensions with all four players, who are regarded as a key part of the club's plans moving forward.
Jorginho had been linked with a move away from the Blues before Tuchel's arrival, but the 29-year-old has now become a key player for the European Cup winners.
Kante, meanwhile, has now made 220 appearances for Chelsea in all competitions, and he was again a leading figure for the club last term, making 48 outings.
The London giants will be looking to make it three straight wins at the start of the 2021-22 Premier League season when they travel to Liverpool on Saturday.
