In another thread I posted these moves as a possibility. I've added the White trade from this thread.
Trade 1 with Houston
Brown for Sheppard, Brooks, Smith, Eason, 2025 1st (10), 2027 PHX 1st, 2028 HOU 1st
Trade 2 with Detroit
Porzingis for Stewart, Fontecchio, 2026 DET 1st (lotto protected)
Trade 3 with San Antonio
Holiday for Vassell
Trade 4 with Brooklyn
Hauser for 36 and future protected 2nd
Trade 5 with GS, Brooklyn
White for Hield, Podz, GS 28 1st
New roster for next year
PG - Sheppard, Pritchard
SG - Vassell, Podz, Fontecchio
SF - Brooks, Hield, Scheireman
PF - Smith, Eason
C - Stewart, Tillman
10 + 28 + Tatum on IR + 36 (Stash or 2way)
Cut or dump Walsh
That team is not the worst team in the league, but a clear lottery team.
Summer of 26 the guys under contract for 26-27 would be Sheppard, Vassell, Pritchard, Podz, Brooks, Hield, Stewart, Tatum, Scheireman, 10, 28, BOS 26 Lotto pick, Det 26 non-lotto pick. So some cap room, though moving Vassell, Stewart, and/or Brooks at deadline next year for an expiring would free up a max or near max slot (or you can use them as the salary filler in a trade for a star).
Boston needs to infuse the team with youth and high end draft picks because I truly believe the championship window is over. It definitely closed with Tatum's injury, but if the Knicks series is any indication, it might have been over anyway. They need to do something differently than just run it back and take a gap year. They aren't contending after a gap year, the team is too old too injury prone and frankly not good enough.