Santana would be an interesting reclamation project at this point, especially on a minor league deal. There's really nothing to lose, and there's an outside shot that he has another solid year left in him.
On a side note, I'd welcome Grady Sizemore with open arms on a similar deal, or another low-risk deal of the same nature - incentive-laden, low-base one year major league deal (with a possible option year at the end).