Hanrahan has agreed to a one-year, $1 million contract with $2.5 million in active roster bonuses, USA Today's Bob Nightengale reports. He signed a similar deal with the team last season, but missed the entire season due to Tommy John surgery. The Tigers' bullpen woes are well-documented, but Hanrahan would likely have to pitch his way into a high-leverage role, as he has not been an effective reliever since 2012.