I've always agreed with you on Brentz. He's a long shot, at best.
However, even if we sign JD, we have very little OF depth, especially, if Nunez is needed at 2B, 3B or SS. The 40 man roster has just 4 OF'ers right now: Betts, Beni, JBj and Brentz. Yes, Holt, Swihart, Lin and maybe a couple others can play in the OF, but we really only have 4 legitimate OF'ers.
If we sign JD, we might DFA or trade Holt, Swihart, Jerez or Elias and keep Bryce.
(Again, I'd be fine with trading or DFA'ing Brentz.)