Rosenthal and Heyman both tweeted that Fielder is being declared 'medically disabled' and unable to play as opposed to retirement, so that's why he's still going to get paid. Half his remaining money is apparently being covered by insurance, so the Rangers aren't being completely left up a creek. I think the Tigers are responsible for paying some of his contract too. Per BBR, he's owed $24mm/year between 2016-2020, and the Tigers pick up $6mm/year. So technically, they're getting 3 more years of Ian Kinsler for $55, where the Rangers end up with: