The Reds optioned Young to Triple-A Louisville on Sunday.
He'll give up his spot in the bullpen to fellow lefty Justin Wilson (shoulder), who was reinstated from the 15-day injured list in a corresponding move. Young has spent most of the season on the IL recovering from a back injury, but after being activated last week, he made three appearances out of the Cincinnati bullpen and gave up four hits and no walks over two scoreless innings.