The way I envision the trades is:
Humphries + picks to Atlanta for Josh Smith.
Bass + Lee + Olynyk to Utah for Al Jefferson.
That's the framework to make this trade happen, add or subtract here and there, but that's the deal.
Wallace is not going anywhere.
It's part on why I'd like to get my hands on J. J. Redick too if at all possible, I think we'll still have room for the full MLE to offer. Or maybe he can be part of a third sign and trade.
You'd end up with something like:
Rondo
Redick-Bradley
Green-Wallace
Smith-Sully
Jefferson
The rest of the players will depend on what is demanded on those sign and trade, but I think we should be able to retain the players above.
With Green, Smith, Wallace, Sully, and Jefferson on your roster, I really don't see a reason to me stingy about retaining Olynyk.
I don't see a reason to move Bradley myself, particularly when Utah really has little leverage here I'd imagine.