I'd personally package all 3 (combined 16.8 million) in a salary dump for an expiring contact... like to Brooklyn for Kris Humphries (terrible player, but on the books for only one more season at 12 mil) ... or to Golden State for the expiring contract of Richard Jefferson. Whatever team could use some bench depth and can give us a guy only under contract for one more season. If we have to give up 2nd rounders to get it done, so be it. If we can somehow land a young asset/late draft pick in the process... that's a huge bonus.
Operating under the assumption KG retires... at this point it's about cleaning the slate, TANKING, freeing up future cap room and acquiring draft picks. Those guys are possible rotation players on a playoff team... they have no place in a total rebuild.
Alternatively, if KG returned... would Bass + Lee + Terry + Sully + our 1st rounder (#16 pick) ... total of 18.1 mil... be enough to land Pau Gasol and his 19 mil expiring contract?
Because if so, PG - Rondo, SG - Pierce, SF - Green, PF - KG, C - Pau Gasol... would at least be an interesting option for the "run it back!" crowd.