If the C's are going to have any realistic shot at banner 18 next year they need a surprise impact from somewhere. Last year it was Shaq but he didn't hold up.
Getting marginal players for the vet min or LLE are not going to be enough to put this team over the top. We're either going to need AB to develop into a very good player soon, get lucky in the draft and get an immediate solid rotation player, or land a veteran "outcast" for cheap money; guys like Yao, AI, etc.
Yao has only played in 5 NBA games over the past 2 years. Who know if he's been keeping in NBA shape or if it's even possible for him to do that while recovering.