The Spurs have exercised the fourth-year team option on Dejounte Murray and third-year team options on Derrick White and Jakob Poeltl for the 2019-2020 season, meaning the three players will continue on their rookie contracts and will not be free agents next summer. Per an official press release:
The San Antonio Spurs today announced that they have exercised their fourth-year team option on guard Dejounte Murray and center Jakob Poeltl for the 2019-20 season. In addition, the Spurs have exercised their third-year option on guard Derrick White for the 2019-20 season.