Actually, I was thinking more in terms of 2008. Consider having 28, 33, 37, 42, and 58 in 2007, and 28 and 58 in 2008. Assume Oberto and Finley both opt out for more money and years elsewhere...
In 2k7 our roster looks currently :
Bigs: Tim, Horry, Elson, Butler,
Wings: Barry, Bowen, Manu, White
PG's: Parker, Beno
Random guess at a mock, trying not to be too crazy (work off of Draftexpress)
Pick # 28 Koponen, Stash in Europe for 1 year
#33 Dominic Mcguire - cheap contract up to 3 years of team options
#37 Demetris Nichols - cheap contract up to 3 years of team options
#42 Ramon Sessions - cheap contract up to 3 years of team options
#58 Ali Traore, Stash in Europe
Bigs - Tim, Horry, Elson, Butler, Javtokas (2 years, 2nd year team option), Vet Min Big
Wings - Barry,Bowen,White, Manu, Mcguire, Nichols
PG's - Parker, Sessions, Vaughn (resigned).
Dump Beno somehow as a trade...
Guaranteed contracts in 2k8
In 2K8
Bigs - Tim
Wings - Manu
PG's - Parker
Options
Bigs - Javtokas, Butler
Wings - McGuire, Nichols
PGs - Sessions
+ a bunch of capspace (1 big FA + smaller deals)
Exceptions that Don't count against cap
1st Round picks - Mahnimi, Koponen, 2008 1st
The key value here is that there is an exception to sign 1st round picks with guaranteed contracts -
http://members.cox.net/lmcoon/salarycap.htm#19
This gives the Spurs 3 players they can sign in 2008 above and beyond the salary cap limits...Leaving them more space for that big FA signing. The 2nd round rookie contracts from the 07 draft are all team options, so they only keep the players who worked out...