Carter agreed to a deal with the Celtics on Monday, Michael Scotto of HoopsHype.com reports.
This appears to be an Exhibit 10 deal, as Scotto notes that Carter will compete for an NBA roster or two-way contract in training camp. Across 38 regular-season games for the Kings in 2025-26, Carter averaged 8.9 points, 3.3 rebounds and 2.7 assists.