Glen Perkins, the local product who became a three-time All-Star as one of toughest lefthanded relievers in the game, is retiring. Twins General Manager Thad Levine said during a winter caravan stop that Perkins has decided to end his playing career but could return to the club in a front office role in the future. A source close to Perkins confirmed late Tuesday that he would be interested in working with the club in that capacity. Perkins, 34, has been quiet since the end of the regular season. He spent most of the year rehabilitating from shoulder surgery in 2016. The surgery cost Perkins 16 months, and he was not the same dominant southpaw once he returned. His first outing was Aug. 17 against Cleveland, during which he faced six batters but got just one out while being charged with two runs. Perkins was emotional following a Sept. 30 outing against the Tigers in which he asked for the ball after getting the third out in the ninth inning. The Twins declined the $6.5 million option on Perkins’ contract after the season ended.