A lot of people have said 2027 is the year they can start to really challenge. I honestly think in 2027 we will see the J's broken up with JB sent out.
As for next season:
Core: JT, JB, White, PP, Hauser, Dame (hopefully), Baylor, Hugo
Gone: Walsh, Garza (maybe), Minott, Davison, Queta, Simons, Niang and Tillman
Still will need a functional front court but the goal should be to challenge in a still weak East..
-Cavs will be shedding pieces like the Cs did after this upcoming season. They will not be a factor
-Knicks will be older and have a lame duck coach
-Pacers will have no Turner and will have Hali back after Achillies
-Bucks I am not sure what they will do being in cap hell
in 2026 with some additions, Boston should be the best team in the East.