On 17 August 2022, Majstorović signed a contract with Russian Premier League club Dynamo Moscow, beginning in February 2023.
[2] On 14 May 2023, Majstorović suffered an ACL tear and missed an extended period of time recovering from surgery.
[4] Majstorović took the spot in the starting line-up during preseason games in July 2024, as Dynamo's centre-backs Fabián Balbuena and Nicolás Marichal were away with their national teams at the 2024 Copa América.
[5] Milan began the 2024–25 Russian Premier League season in the starting line-up and scored his first goal for Dynamo on the second matchday on 27 July 2024 against Lokomotiv Moscow.
[7] Majstorović represented Serbia at the 2022 UEFA European Under-17 Championship, where they reached the semi-finals.