Best I could come up with that might make some semblance of sense for all 3 teams
Houston - Rondo, Bass
Minnesota - Asik, Lee
Boston - Lin, Williams, Shved, Jones, Motiejunas, Cunningham, Hummel, 3 million from Houston, future 1st from Minnesota
Boston uses the cash and cuts Hummel, Pressey, and Bogans to get back to 15 and still shaves salary this year and long term (could be done with Bass instead of Wallace, but I don't think Houston would do that, but it would be worth a shot).
New Boston lineup
PG - Lin, Shved
SG - Bradley, Crawford, Brooks
SF - Green, Wallace, Williams
PF - Sullinger, Cunningham, Jones, Motiejunas
C - Olynyk, Faverini, Humphries