George (illness) isn't listed on the injury report for Sunday's game against Dallas, Jack Simone of BostonSportsJournal.com reports.
Nembhard was assigned to the G League's Grand Rapids Gold on Thursday.
Whitmore was assigned to the Grand Rapids Gold on Thursday.
Johnson registered 23 points (9-15 FG, 4-7 3Pt, 1-1 FT), four rebounds, three assists and one steal over 30 minutes in Wednesday's 123-118 victory over the Grizzlies.
Jokic racked up 27 points (10-16 FG, 1-3 3Pt, 6-8 FT), 11 rebounds, eight assists, one steal, one block and one turnover in 37 minutes during Wednesday's 123-118 win over the Grizzlies.
Murray popped off for 30 points (12-19 FG, 4-7 3Pt, 2-3 FT), four rebounds, eight assists and two blocks over 32 minutes in Wednesday's 123-118 win over Memphis.
White posted 19 points (7-15 FG, 3-7 3Pt, 2-2 FT), seven assists, one rebound, four blocks and one steal over 38 minutes during the Celtics' 98-93 win over the Raptors on Wednesday.
Queta recorded 11 points (2-4 FG, 1-1 3Pt, 6-8 FT), 13 rebounds, three assists, three blocks and one steal over 31 minutes during the Celtics' 98-93 win over the Raptors on Wednesday.
Pritchard finished Wednesday's 98-93 win over the Raptors with 14 points (5-13 FG, 2-7 3Pt, 2-2 FT), one assist and one rebound over 31 minutes.