He is on the books of Toronto FC and wears shirt number 74. His main role on the pitch is Midfield.

His latest transfer saw him join Cincinnati II from Toronto FC II via on 2026-01-01.

Over 4 appearances in the United States Major League Soccer 2025, Michael Sullivan contributed 0 goals and 0 assists, completed 0 key passes from 1 total passes, and posted a passing accuracy of -.