No we aren't sure about Smith but I would like to bring in a guy that can be a young(ish) and low cost player with some potential. Between our young guys in the minors, we may only need a stopgap anyways. I would assume the Rangers would have to throw in a little bit more but not much. One year of Devin at 10 mil plus the QO doesn't have a huge amount of value.
Robert fits well into our future payroll. He is owed about Willy made this year and then you have two years of club options that are pretty close to what Hoskins makes. If he isn't performing, you can always decline the option and free up that space. I think Robert would benefit from moving to a better run organization and the Brewers always seem to be in the mix for a higher end outfielder (Bryan Reynolds comes to mind recently)
I am not huge on Black personally so would like to sell on him while he has some prospect status.