There is also an understanding, according to those sources, that De'Aaron Fox is not tradeable on his contract at the moment, and rehabbing his value with a good playoff performance next season will be crucial to an inevitable backcourt succession plan. Castle is locked in as a starter, and though the three guards closed games together on occasion, it’s unlikely the Spurs would start all of them unless one of them becomes a knockdown shooter.

This article originally appeared on Hoops Hype: There is also an understanding, according …