He's only 22 you know.
The Spurs are on the precipice of a new era. Already, we've seen reports of one departure [editorial on that, by the way: Buh-bye] and the odds are pretty good that we'll have more significant ones in the near future, with Tim Duncan and Manu Ginobili both facing decisions about whether to return for one more season or to hang 'em up.
Since it seems unlikely that the Spurs will sign a couple of 40-year-olds to replace their legends, it's fair to assume that they're about to get younger.