The Jazz said Williams is attending a relative's funeral in West Virginia. He was named to the Western Conference All-Star Team on Thursday.
Boozer was out with a strained right calf. He was injured Wednesday night during Utah's win at Portland and will be re-evaluated Monday.
The Jazz say reserve C Kyrylo Fesenko would be available Friday after missing six games with a sprained left ankle.
Information from the Associated Press was used in this report