Both players reportedly will be re-evaluated "at a later point."
Gill-Caesar has averaged 9.6 points and 2.9 rebounds this season, while Wright has averaged 5.5 points and 2.1 rebounds.
Both players four-star recruits in the class of 2014, according to Rivals.com.
The Tigers have lost eight consecutive games to fall to 7-15 (1-8 SEC). Missouri will host Texas A&M on Saturday.