The 2026 offseason has been a busy one for the Boston Celtics, but their roster has gone through quite the transformation since they won the title in 2024. Here are a few players (in no specific order) that the Celtics will need to rely on having a great season. MORE: Paul George Named One of NBA's Most Overpaid Players3 Celtics With Most to Prove in 2026-27 SeasonPayton PritchardThis most recent season was the best of Pritchard's young career, as he absorbed a new role as a more frequent starter. People have predicted his potential jump this upcoming season to be like the one Jalen Brunson had when he joined the Knicks. In a Joe Mazzulla offense that's centered on 3-point shooting, White's 32.7 percent from the perimeter last season hurt Boston badly.