I think vinnie will get traded, with pratto, santana and melendez (and in a couple years perez) the royals are pretty full at 1b/DH.
Now you can never have too much talent and injuries and underperformance happen but VP is 24 his value won't go higher when he is 25 and in AAA.
If I was the royals I would keep him in the minors till the deadline and then make a decision.