As of June 9, 2025, there is no official announcement or credible reporting confirming that Cleveland Cavaliers star Donovan Mitchell has signed a five-year, $308 million contract with the Boston Celtics. In fact, Mitchell is currently under contract with the Cavaliers, having agreed to a three-year, $150.3 million extension in July 2024 . This extension includes a player option for the 2027–28 season, allowing Mitchell to become a free agent in three years .
Given this information, the reported deal with the Celtics appears to be speculative or based on misinformation. Mitchell has expressed his commitment to Cleveland, notably stating, “I’m not leaving,” in a social media post following the announcement of his extension .
While the NBA is known for its dynamic player movement and trade rumors, any substantial change in Mitchell’s team affiliation would require official confirmation from the Cavaliers and the NBA. Until such an announcement is made, the notion of Mitchell joining the Boston Celtics remains unsubstantiated.
For the most accurate and up-to-date information on Donovan Mitchell’s career and contract status, it’s advisable to consult official NBA sources or reputable sports news outlets.
