Our forwards are: Miles, Bertans, Rui, Brown, Wagner, Anderson, Jones & Bonga. Obviously, we aren't trading Bertans, Rui or Brown, & Justin Anderson was available for free all Summer. No one picked him up: we can assume he has no trade value. That leaves Miles, Wagner, Bonga & Jones.
B/c of how many guys we have, trading Jones for a player we wanted to keep would mean that someone else would have to go as well, so in effect we'd be trading 2 guys for, as you say, "a 9th-10th man Center." Plus, any competent GM understands that we are likely to let him go, making him available free -- you don't trade something for that guy.
Bonga is a prospect who's extremely young & has a lot of potential upside. We don't have much at stake this season, & to me it looks like it would be a mistake to move him -- tho, obviously, that would depend on what we were getting back.
The ideal guy to trade, therefore, would be either Miles or Wagner. I'd trade Wagner in a minute, but I don't think they want to trade him. &, Miles' salary makes him essentially untradable.
Hard to see a potential good move here.
Remember -- if you don't like the post above: blame Doc not me.