The Chelsea loanee has been a key player for the Whites and their best results have come when he has been at the heart of the defence.
However, he is set to miss the Christmas period after picking up a hamstring injury in last Saturday's 2-2 draw with Derby. Aside from the Czech defender, the Whites boss has a full squad to choose from.
Jokanovic confirmed: “Tomas Kalas has a hamstring problem and is outside of the squad but the other players are all ready for what’s in front of us.”
The Serb has to decide who partners Ragnar Sigurdsson in the middle of Fulham's defence with Michael Madl and Tim Ream the logical options.
Jokanovic added: “My squad has three centre-backs more. I will try and find a solution between these three players for Tomas Kalas.”
Kalas has made 16 appearances for the club this term and scored in the 5-0 thrashing of Huddersfield at the end of October.
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