I still don't think Rondo will be traded this summer, but for the sake of playing along with rumors, why hasn't Atlanta been rumored as a trade candidate? They've been high on Rondo for a while now, are another star away from being firmly in the Eastern elite, and cleared out a whole bunch of cap space this offseason (including sending away center prospect Lucas Nogueira). So far, they used that cap on... Thabo Sefolosha? There is no way that's their end goal, so why not a trade like:
Boston sends Rajon Rondo
Boston receives Larry Sanders, Dennis Schroder
Atlanta sends Jeff Teague, Dennis Schroder
Atlanta receives Rajon Rondo
Milwaukee sends Larry Sanders
Milwaukee receives Jeff Teague