I'm spitballing here, but it obviously wouldn't be a one for one deal, other assets would be included.
Either way, Arjun's bat has "bust" written all over it, regardless of his glove. Deal him while he's still a top-100 prospect, I say.
Controversial opinion: The front office should prepare for the likelihood of Arjun ending up like Orelvis and deal him this offseason to the d-backs (while he still has value) for one of their IF prospects who can actually hit consistently (Crisantes, Troy, etc.).
I'm not quite up to speed on things, why didn't the front office just call up Tirotta or Kasevich instead of bringing back some washed-up bum from a losing season?