Donaldson agreed to a two-way contract with the Heat on Wednesday, Shams Charania of ESPN reports.
Donaldson will join the Heat but isn't guaranteed a consistent role while signed to a two-way contract. Over 35 appearances for the University of Miami in 2025-26, the 22-year-old guard averaged 16.4 points, 5.7 assists, 3.6 rebounds and 1.4 steals in 34.0 minutes per contest.