Chelsea defender Tomas Kalas has signed a new four-year contract with the club and re-joined Fulham on loan for the upcoming season.
The Czech defender spent the previous campaign on loan at Craven Cottage and impressed as part of Slavisa Jokanovic’s first team.
The 24-year-old made 36 appearances for the Cottagers and helped them to a sixth placed finish and the play-off semi-final.
Kalas joined Chelsea in 2010 and has now been sent out on six separate loan spells.
Vice Chairman and Director of Football Operations Tony Khan told Fulham's official website: "It's a pleasure to welcome Tomas Kalas back to the Fulham Football Club.