Assuming the question is based on one "having" to go. I'd have to ask the question, what is the follow up? Is one being moved to free cap space for a significant offensive player? If so, and you need every penny to get that mystery player, then Provy goes. If Sanheim has to be packaged with TK to make it happen, Provy goes. But a lot of this revolves around what Sanheim actually is. A few short seasons ago he was tripping over his own skates, giving up scoring chances. The forum ax was being sharpened to lop off his head. Now all of a sudden, in a year where pretty much everything and everyone sucked, he has emerged as "better" than he was. Is he really that good, that you'd deal a player like Provy? If so, then that the answer for me.
I still think Provy is better and trading him would bite us in the azz. I've never been high on Sanheim. But, like many have stated, I'd like to see them keep both