N’Golo Kanté, Jorginho, Andreas Christensen and Antonio Rüdiger will all reportedly be offered new contracts by Chelsea this summer.
Journalist Fabrizio Romano says the club will look to cement the futures of all four players in the coming weeks.
They played key roles in Chelsea’s Champions League-winning campaign and have since been involved in the European Championships for their respective countries.
Once the players return from their summer breaks, Chelsea are expected to ensure they put pen to paper.
Real Madrid and Paris St-Germain have retained a strong interest in Kanté, while Jorginho was linked with a return to his native Italy. But both players are expected to show their commitment to Chelsea by signing improved deals.
Defender Rudiger looked set to leave the club when frozen out by ex-Blues boss Frank Lampard.
But Rudiger has re-established himself as a first-team regular since the appointment of his fellow German Thomas Tuchel and is now set to extend his stay at Stamford Bridge.
Christensen previously struggled to hold down a regular first-team place but the Denmark international was outstanding when he came in for Thiago Silva last season and is seen as a big part of Chelsea’s plans for the future.