The Boston Celtics have signed G-League forward Justin Champagnie to their roster, filling their final spot ahead of the playoffs, according to The Athletic's Shams Charania. The 21-year-old has shown consistency throughout the season with the Sioux Falls Skyforce, the Miami Heat’s affiliate, averaging 18.2 points per game, while shooting 52% from the floor and 30.6% from beyond the arc, and had a huge 43-point game with 13 rebounds and four assists. Champagnie signed with the Raptors in 2021 as an undrafted agent and played three games this year with the team as a wing. With the Celtics, he is not expected to receive minutes in the playoffs, but his signing gives the team extra depth in the wings down the stretch of the regular season. The Celtics have kept their final roster spot open since trading Noah Vonleh to the Spurs on January 5, now making it clear they were waiting for the perfect opportunity to sign promising talent. The deal with Champagnie is expected to be for the minimum with a partial guarantee for next season.