Was just looking at the numbers salary-wise. We'll have the official cap/tax numbers tonight, but the last estimate for the luxury tax was
approximately $68 million. The Spurs are at about $51 million for 6 guaranteed players (Duncan, McDyess, Blair, Hill, Ginobili, Parker).
That means the Spurs have about $16-17 million to play with if they want to stay under the tax. Here are some likely salaries to go along with those 6 guaranteed players:
2 of Hairston/Gee/Temple/Jerrells: $1.5 million, or $1.6 million if Hairston is one of the two.
James Anderson: $1,134,500 (this is 100% of rookie scale; Spurs have been known to give 80% at times, especially if numbers are tight)
Ryan Richards: minimum salary, approximately $0.5 million
That brings the Spurs up to 10 contracts at approximately $54.2 million, leaving them roughly $13.8 million to fill out 3 more spots. To show you how tight this could get for the Spurs
(and why they're likely being extra careful with the financial numbers) here are two more rumored/speculated contracts to go with the above:
Splitter: $5.8 million
Jefferson: $7 million
That brings us up to $67.0 million with 12 players. (Granted, I've done some rough rounding during parts of these calculations; the Spurs will not do such rounding.)
Mathematicians in the Spurs front office, this is where you earn your money.