The Tigers have other options for first base, including moving Miguel Cabrera across the diamond, which would open a spot at third base for top prospect Nick Castellanos. The impending departure of free agent Omar Infante gave the team a hole at second base that needed to be filled.
The Rangers, who have lacked a power-hitting first baseman throughout their recent tenure as contenders in the American League, will likely slide highly touted youngster Jurickson Profar in at second base.
Fielder is owed $24 million per season through 2020 and can block trades to all but 10 teams. It is not known if the Rangers are one of those clubs.
Kinsler still has $57 million remaining on his contract, which expires after the 2017 season. The deal also includes a $10 million option or $5 million buyout for 2018.
The Tigers will reportedly send $30 million to the Rangers as part of the trade, per Jeff Passan of Yahoo Sports.