The only ones who should be considered the core are Tatum and Brown. They are All-Stars entering the primes of their careers with 4 and 3 seasons left on their contracts after this one. I'm not saying everyone else will or should be moved, but those two are the core. Time Lord has a lot of potential, but if he can bring back the right player, the Celtics would be foolish to not to consider it. Smart is terrific at what he does, and I think is underappreciated by at least a vocal minority on this board, but he's only got one year left and could walk afterwards, so he's not the core any more. Pritchard is nothing special -- he's a quality player, but one who is both replaceable and upgradable. The only young player I'd truly be sorry about moving is Romeo, because I think he has worlds of potential and hasn't had the opportunity to show it due to injury, and trading him now would likely not fetch anything near what I think his value could be.
I do expect multiple moves in the next week, some of which will be designed to fix problems with this year's team, but others of which will be designed to better position us for the offseason. The most important of those moves is trading Kemba for something of value, even if the value isn't huge. We can use the Hayward TPE to take back the players we receive, assuming that they don't total more than $28.6 million, and get a brand new, $34.4 million TPE, which should be sufficient to fit in Beal this summer, or any other number of stars that may be on the market this offseason.