Chelsea reportedly rejected bids from Tottenham Hotspur and Everton for defender Kurt Zouma during the summer transfer window.
Both clubs were known to be in the market for a new centre-back during the recent window, while Chelsea's signing of Thiago Silva saw a number of their defenders linked with moves away.
L'Equipe reports that both Everton and Chelsea's London rivals Tottenham made official bids for Zouma, only for Frank Lampard's side to insist that the Frenchman was not for sale.
Zouma, who spent the 2018-19 season on loan with Everton, has since established himself as a regular member of Lampard's starting XI at Stamford Bridge alongside Silva this season.
The 26-year-old has played 12 times across all competitions, including in seven of Chelsea's eight Premier League outings.
Zouma has scored three goals in those seven Premier League appearances, already surpassing his previous best goalscoring tally for an entire season.