Sinclair Armstrong is a 23-year-old professional football player from IRL. He currently plays for Goztepe, wearing the number 22 shirt. At the international level, he represents Ireland U21. He plays primarily as a Forward. He stands at 182cm tall and weighs 82kg. His preferred foot is Right. His current market value is estimated at 2.5M €.

His most recent move was a Free from Bristol City to Goztepe on 2026-07-01. The reported fee was 1.75M €.

In the English Football League Championship 2025-2026 season, Sinclair Armstrong scored 4 goals and provided 0 assists across 35 appearances, averaging 0.1 goals per game with 39 shots attempted and 20 on target.