The Tigers selected Ramirez's contract from their alternate training site Wednesday, Evan Woodbery of MLive.com reports.
Ramirez made his big-league debut for the Tigers last season and went on to post a 4.07 ERA in 79.2 innings of relief. He'd spent the entirety of the season up to this point working out at the team's alternate training site. He'll likely fill a lower-leverage relief role upon his arrival.