Blair is a type of player that is probably going to slip, especially is he measures out below 6'8". I was thinking that if he slips into the 20s, would it be a more prudent move to buy a pick with 3M and get Blair instead of resigning Baby for 3-4M a year? Going the Blair route would be cheaper since Celtics would have to pay 3-4M x 2= 6-8M for Big Baby because of the luxury tax, but for Blair they would have to pay 3M + ~1.2M x 2=~5.4M. And after next year, the savings would be even greater.
There are a few teams in the 20 range who might be willing to sell their pick. New Orleans at 21(sold their pick last year and losing money...might have to sell pick to keep Paul/West/Chandler together), Minnesota at 18 (since they have 2 other 1st rounders), Atlanta at 19 (cheap ownership group and have Williams/Bibby/Zaza going into free agency) and Utah at 20 (save money to resign Boozer + Millsap).