It's maybe a bit tough to figure out how the numbers work out in today's dollars, but the hypothetical Joe Mauer being a Free Agent this off season reminds me (a little) of Wade Boggs going to the Yankees. His last season in Boston, Boggs "only" hit .259, only had one outlier year ('87) in which he hit 24 homers, and was considered to be washed up by various people in his own organization (The Red Sox did the same thing to Roger Clemens a few years later). Boggs was a few years older than Mauer, but was likewise a multiple time batting champ that offered less power than typical from a position that generally supplies it. Like Boggs, Mauer would just need one team to want him badly enough. Red Sox, Yankees, Mets, Brewers, Pirates, Marlins - there are lots of teams that would gladly pay and/or overpay for 2 or 3 years of Joe Mauer.