Don't really have anyone important, outside of Bynum, needing a new salary. And your deal is sort of a contradiction in that, where they need bigs, so they trade for Hickson, who will be a free agent, while moving Turner, who has a contract for next season.
They have Turner, Young, Hawes, Holiday and Richardson all locked in. 7 of their top 9 guys in minutes all signed for next season. And aside from Bynum and Hawes, they have Young and Allen both playing PF and C, respectively. They aren't trading Turner for Hickson.