What do you think the front office is looking for?
This is the big question of course. I think the front office is looking at anything and everything to improve the team. I can think of a few possibilities (probably wishful thinking).
I see a need for a veteran bench wing/SF or swing/PF. Hauser has been a pleasant surprise so far as a back up wing/forward but his magic is already starting to wane some. I am not sure if he will hold up and be a viable playoff rotation player. It will probably require a trade to find a bench forward/wing who is enough better than Hauser to make it worthwhile to bring in. I don't see any of the currently available FAs as fitting this mold.
And of course, I would expect that they would be open to bringing in a rotation caliber big, probably a PF (Horford and RWilliams can be our Cs). As with the wing/forward, a PF/C type would need to be good enough to actually be a viable playoff rotation player, someone at least as good as Grant for example, not another Kornet or Griffin. I don't see any of the currently available FA bigs as fitting this need.
I would trade White or Pritchard (but not both), and/or Gallinari for the right player. I would not trade Smart, Grant or any other rotation player, unless there was a really good, all star level player coming back. I don't mind giving up picks either for the right player(s). There are lots of options, I hope the front office is seriously looking at all of them. It does not seem like "dumping" Vonleh is directly related to some specific subsequent move, just clearing out his money and roster spot as RWill (returning), Griffin, and Kornet make him expendable.