They should be targeting both. One may be more high end than the other, but I'd be dissapointed at only one (even if the one is an elite difference maker). Not to mention his name... but a MF (2015 acquisition, not saying much more) innings-eater acquisition to get them through the July/August dog days of summer may be just enough given that I expect JV/Luis to be playoff contributors.
he's an emergency arm just like any other rookie pitchers. if they struggle, 99% of the time they will be sent down. also, i can't tell if these are wild pitch or passed ball.