Chelsea first-team coach, Bruno Saltor, has left the club amid a reshuffle of Mauricio Pochettino's backroom staff.
Pochettino has yet to decide whether to bring in his own replacement.
After six games, Chelsea have had their worst start to a season since 1978.
Saltor came to Stamford Bridge as part of Graham Potter's coaching staff, and he acted as Chelsea caretaker boss, when the former Brighton manager was sacked after just 31 matches in charge.
Potter and Saltor worked together at Brighton where the Spaniard was a youth development coach.
