None of those listed bring back anything that moves the needle.
To get something good, you have to give something good.
If we are serious about improving the future of the the team, we have to move Buxton and Berrios.
They are GONE in 1.5 years. Unless you think we are going to win the WS next year (we are not) then you HAVE to move them for value NOW.
Frankly, I'd also try to sell high on Rodgers for the right price as well, because he will be more expensive next year and then gone in FA.
I'd actually keep Palanco, Kepler, and Arrez because they could be better next year, are under control, and we'd be selling low right now.
If we are smart, we do a minny rebuild in minnesota... now targeting the widow of Duran, Larnach, Jeffers, Krilloff, Lewis, our top 5 pick (hopefully an elite pitcher from college), Miranda... etc.
Suck it up and trade anyone of value that won't be here in 3 years anyway!