Chelsea will part ways with the defender Benjamin Chillwell and with the midfielders Kearney Chukwuemekoi, Cesar Casadei And Kiernan Dewsbury Hall.
Chilwell, 28, has played one League Cup match this season.
This season, Chukwuemeka, 21, has played for the Blues in five matches and has not scored a single goal.
This season, Dewsbury-Hall, 26, has made 15 appearances in all competitions for Chelsea, scoring two goals and providing one assist.
Casadei, 21, has made six appearances for the London club in all competitions this season and has not scored a goal.
