"[He was] better [Sunday]," Thibodeau said. "Stayed behind to get treatment back in Chicago and hopefully we'll get a look at it [Tuesday].
"[Athletic trainer] Fred [Tedeschi] doesn't know [if he'll play Tuesday]. He said it was significantly better [Sunday], but you never can really tell with those things."
Boozer is averaging 20.1 points and 10.1 rebounds, and he missed 15 games earlier this season because of a broken finger.
Nick Friedell covers the Bulls for ESPNChicago.com and ESPN 1000.