My guess is Cargo sits around for quite a while on the free agent market similar to Bautista and Trumbo last off season. I also think that when he does sign it won't be a long-term deal. I doubt he's back in a Rockies uniform but it wouldn't be a complete shock depending on the market. 

If recent history has told us anything, it's that GM's across the league are getting smarter about signing aging hitters to long-term deals. 

Cargo appears to have lost bat speed, which can be the death blow for a slugger. His defense is still solid so that differentiates him quite a bit from Bautista and Trumbo but overall, I don't see him getting anything more that a two year deal with some type of club or mutual option for a third year.

He could do the Rox and himself a huge solid if he gets hot right now though....