How many can you keep? If you let them go, do the open spots go to draft picks towards next year?
Regardless, I'd keep Teheran, Arenado and Odorizzi. I'd put Gordon and Jennings on the block and see if you could bring in anything substantial for them as I don't feel they'll live up to expectations. If not, just hang onto them. Watch Cozart and how he does in his first MLB stint. I like him but I'm not sure his speed and power fully translate (although Grey over at Razzball feels he could be something close to a Espinosa clone). I'd probably give Taylor, Jeffress and Hechavarria some more time to see if they can become anything but Carter, Flowers and Francisco can be punted.