Not even the Marlins are that cheap.
This is so far beyond infeasible that it's the closest thing I've ever seen to a player acquisition that is actually impossible. Not prohibitive, not too expensive to be worth trading for, not just a mismatch between what we have and what they want. An actual player situation in which nothing we could do or say could ever concievably land this player on our team at all, under even the remotest most cuckooland scenario you can dream up.
If they really want to shed salary, they have talent they can bundle to intice a bite that's worth waaaaaaay less than Giancarlo Stanton. Yes, he is up for arb, and yes, this is the Marlins, and no, even with those facts both together, it's STILL absurd to even contemplate ANY scenario in which Giancarlo Stanton is in a Red Sox uniform next year.
See you again in two or three years on this one. It would take Stanton at least that long to shoot his way out of Florida.