It is a legit question for every team ever that has had a championship team. How long to you hang on to the core? When do you blow it up?
I agree that 2025-26 is a lost cause, even if Tatum somehow makes it back. He probably won't be 100% and do you really want to play him play off minutes immediately after coming back from this serious of an injury? I don't. For 2025-26, the lower in the standings the better, but that doesn't mean we should trade everyone and not have anyone for 2026-27.
My strategy would be to make some cost cutting moves this season, I understand why they will need to do that, but keep a core unit to make a run in 2026-27 and beyond. I think a team with Tatum, Brown, and White is still right there with anyone. Even if these players are peaking now, they are still a very solid core. If it goes really badly in 2026-27, then blow it up. And if you can add Porzingis at say $15M per season for 2026 and beyond, even better. He has durability issues but even with that, what big are you going to get that would be better?
Brown or whoever you want to trade will have plenty of value now and will in a couple of years too. I don't see how we come out of it better by trading Brown now. For a truly good deal, sure, but not for expiring contacts and draft picks.