I'm not against them coming back but it would have to be after we renounced the rights to them so we were able to free up the money linked to their cap holds.
They'd be good players to bring off the bench for reasonable money but I think the days of relying on them to provide heavy minutes as starters has come to an end (at least if you expect them to be consistently productive)
You don't renounce them until you actually have a use for that cap space. It's entirely possible that there is no good use for that cap space.
Reasonable money for KG, in my mind, is whatever you think is 6th Man of the Year candidate money, because if you have him come off the bench next season for 25 mpg, that's a reasonable expectation of his level of production.