Sacramento gets Rudy Gay into a total mess with no supporting cast at all, so, why would they say yes to this trade and take over his hefty contract with no goals to accomplish, I wonder.
Memphis definitely shuts it down, since they are already doing well with Gay, and will be reluctant to mess up with the things. Especially if you consider the fact that they are to give up their starter SF and get back a backup caliber player in return to fill his spot.