Martin is clearly--clearly--finished as an everyday catcher.  He might still be useful in a platoon.  Pearce is not an outfielder, not even close.  He is best suited to DH, and if you wanna do that, fine--then trade Morales.  Can't have both.

Carrera is a bench player.

You either lock Donaldson up now or trade him, cannot go into the next season with him not under contract.  Offer market value for 3 years, if he dithers, you move him for top prospects.

Tulowitzki?  Really?