I'd avoid Cobb and Lynn. Both have missed significant time in the past three years and consequently have been outperformed by Cashner and Liriano over that stretch. And as Cobb and Lynn are more talented, both appear to want more money and years. But both also have issues showing up for work and their recent TJ surgeries would indicate both are more likely to miss a full season during their next deals.
At this point, sign Morrison or Duda, Cashner or Liriano, and Watson and Nunez, assuming Nunez is happy with AA super sub role. If Nunez prefers a team that can guarantee him a bigger role, the surprisingly still productive Brandon Phillips might be an excellent stopgap 2B. Or Neil Walker, who is somehow still available and getting no buzz...