Chelsea are on the brink of a defensive crisis with a number of Thomas Tuchel's back-line set to leave on free transfers at the end of the season.
Cesar Azpilicueta and Andreas Christensen are both set to depart, with Barcelona linked with moves for both players, but the biggest concern surrounds Antonio Rudiger.
The 28-year-old has been a key part of Tuchel's side since his arrival, going from an outcast at Stamford Bridge to one of the most highly-rated centre-backs in the Premier League.