The Philadelphia 76ers and Boston Celtics lock horns in a box-office regular-season game on Tuesday. The Sixers received a massive boost ahead of the contest when Joel Embiid was cleared to suit up after missing the previous game against the Detroit Pistons on Sunday.Embiid was rested from the Pistons game owing to a knee injury management as Philadelphia played on the back end of a back-to-back. Expect the 7-foot center to play anywhere between 25 to 30 minutes against the Celtics.Meanwhile, Paul George will not make his comeback on Tuesday against Boston. The former LA Clippers star is listed as out once again with a left knee injury. There is no timeline for George's return, even though the veteran forward has been a full participant in team practices of late.Joining George on the sidelines are Dominick Barlow and Johni Broome. Barlow remains out with a right elbow laceration, while Broome is sidelined with a right ankle sprain. Barlow has missed the last eight games, while Broome has played just six minutes this season.Despite Joel Embiid sitting out four games and Paul George yet to make his season debut, the Sixers (6-4) are above .500. Tyrese Maxey has led the team superbly, while Kelly Oubre Jr. and rookie VJ Edgecombe have been stellar in patches. The Sixers currently hold seventh place in the Eastern Conference.How to watch Boston Celtics vs. Philadelphia 76ers?The Boston Celtics vs. Philadelphia 76ers game will take place on Tuesday at the Xfinity Mobile Arena in Philadelphia, Pennsylvania. The game will tip off at 8 p.m. EST (5 p.m. PT).The Celtics vs. Sixers game will be nationally televised on NBC. For those looking to stream the game live, it will be available on Peacock, NBA League Pass and Fubo TV app and website (regional restrictions may apply).