I can't disagree any more here. When your team is a piece or two from being a serious postseason player picking up an extra relief pitcher can be the difference needed to take the next step. How many saves have been blown by the pen this year? Too many, that's for sure.
How much of an impact can he really make? How many innings will he pitch? What guarantee do we have that he'll even perform decently well in the ALE?
His FIP is 2 full runs higher than his ERA. AND he's moving to the more difficult league, and the toughest division in said league.