The Grizzlies picked up Prosper's team option for 2026-27 on Monday, Jake Fischer of BleacherReport.com reports.
The option was worth $2.4 million. Prosper made 53 regular-season appearances in 2025-26, posting averages of 10.0 points, 3.5 rebounds and 1.0 assists in 18.6 minutes while shooting 54.9 percent from the field.