Former Chelsea defender Ashley Cole has insisted that the club cannot afford to lose Antonio Rudiger.
Rudiger was on the scoresheet as Chelsea beat Tottenham 1-0 on the night and 3-0 on aggregate to progress to the final of the Carabao Cup.
The centre-back is a key part of Thomas Tuchel's team, but his future at Stamford Bridge is uncertain given that his contract expires in the summer.
Rudiger is allowed to sign a pre-contract agreement with foreign clubs and he is the subject of interest from a host of clubs, including Real Madrid, Paris Saint-Germain and Bayern Munich.