Tomas Kalas is set to end his nine-year stay at Chelsea to join Bristol City on a permanent basis after the Championship club agreed a fee with the Blues for the defender.
The Robins were impressed with Kalas’ loan spell last season and are willing to make him the club's best-paid player as they hope to make a push for promotion to the Premier League next season.
The fee for Kalas could even eclipse the club record of £5.3 million which City paid to sign Famara Diedhiou from Angers in 2017.
Now 26 years old, Kalas has spent time on loan at six different clubs since joining Chelsea in 2010, with stints at Sigma Olomouc, Vitesse, FC Koln, Middlesbrough, Fulham and Bristol City.