Right now, I think the best option if we can't get neither MGK, Barnes or Beal is to trade the pick.
This I think is the best trade we could possibly make: Calderon, Davis, James Johnson and the 8th pick for Rudy Gay.
Then add a rotation player with our 37th pick.
Then sign Steve Nash.
Then sign another backup PG than Bayless and also another backup SG.
Gay/Kleiza/Rookie (37th pick)
Nash/FA/FA or Rookie (56th pick)
This is, to me, the best realistic option. Now let's see what happens tonight!