Mauer won't bring much in return but he's exactly the kind of bat teams want on a postseason roster. A righty comes into the game and you trot out Mauer, one of the most professional hitters in the game, a guy who will make the pitcher work to get him out and also a guy who will eagerly work a walk in a late-inning situation. And given how the AL (and some of the NL) is shaking out, teams aren't looking to make the postseason, they're looking to solidify a postseason roster. Mauer doesn't have much value taking up a regular season 25-man roster spot but on a postseason roster with more space for bench players, I could easily see a team taking him on in a bench role.