San Antonio has been the league’s most consistent franchise for going on 18 years now, but two of the three players that have been in place for much of the team’s recent success — Duncan and Ginobili — are in the final years of their respective contracts, and could very well choose retirement at the conclusion of this season. If that happens, the Spurs aren’t going to pursue a long rebuild through the draft. They’re instead expected to go hard after one of the top unrestricted free agents that will hit the market this summer.