This should be an interesting off season, if nothing else.
We should learn if Dipoto is one that takes each season one at a time and as individual building block - building the team and the farm as best as he can each and every year... or is he looking at the winning window and has we gotta win in the next year or three.
If Dipoto sees a window, then definitely Wishhiker and Grizz are correct that Karns or Walker (or even Miranda or Paxton) will be dealt this off season... and possibly two. I mean looking at the farm system currently, there really is not that much new that we have not seen that is ready to contribute in 2017... and there really are not that many trading chips capable of getting Dipoto a Yelich, Springer or Bryant.
Thus, the best way to get more depth in the system then may be to trade young pitching for younger pitching and bats - like the Monty trade, and spend money on a couple filler SP's like Kazmir, Holland or such to get reliable results.