Without a doubt, Baez is the one prospect who can be had. Bryant, Russell, Soler, aren't goin anywhere, I'm fairly sure Theo signed Castro and Rizzo to team friendly deals for a reason, and I'm starting to believe that Schwarber is on the Bryant/Russell/Soler no touch list as well, but I can't prove it. (There is talk in Cub circles that Schwarber is thought of as an equal to Bryant, no joke)
Baez could easily be flipped, if Theo wants to. Not sure if he's there yet tho, because he has no reason to do so, yet.
How does the organization feel about Rizzo? Untouchable as well or could be dealt if offered the right deal?