We get Gasol, KG would be an excellent back up big playing limited minutes for us. Would he come back to Boston though to be a bench player? I'm not sure. He might retire before being that.
While I don't think that Garnett would ever want to come off the bench, I do think that he could be Walton-esque as a 6th man. Unfortunately, we're no longer contenders, and I'd only want to see him thrive in such a role while wearing the green, but that's because I'm being selfish. I miss him. A lot. I know that guys get old, but you simply can't get equal value for iconic and legendary players, and he should have retired here, with Pierce. Sigh.