He currently plays for Union Saint-Gilloise, wearing the number 27 shirt. He plays primarily as a Defender. He stands at 187cm tall and weighs 74kg. His current market value is estimated at 3M €.

His most recent move was a Free from Sint-Truidense to Union Saint-Gilloise on 2025-09-02. The reported fee was 3.8M €.

Throughout the Belgian Pro League 2025-2026, Louis Patris featured in 27 matches, averaging 1.9 tackles, 1 interceptions, and 1.5 clearances per game, while blocking 0.1 shots per game.