Whats stopping the warriors from signing Shaq or Yao Ming just to mirror Bobans minutes

IThedont 7:27 am Mon Feb 11 EDT 0 ups @ 0.14 Removed

Is this a realistic and legal trade that the warriors could make? Or are they just gonna put their head in the sand until they meet us in the finals and Boban wins FMVP in a 4-5 game finals win?