Mathias Flaga Olesen (born 21 March 2001) is a professional footballer who plays for Danish Superliga club Sønderjyske. Born in Denmark, he represents the Luxembourg national team.
Club career On 10 June 2025, Olesen signed a two-year contract with Greuther Fürth in 2. Bundesliga.
On 2 February 2026, Olesen moved on loan to Grazer AK in Austria, with an option to buy.
On 12 July 2026, Olesen signed a three-season contract with Sønderjyske in Denmark.
International career Olesen made his international debut for Luxembourg on 11 November 2021.
Personal life Born in Denmark, Olesen moved to Luxembourg in 2007 with his family, as his father got a job there in the investment industry. Olesen attended the European School of Luxembourg II (ESL2).
Career statistics Scores and results list Luxembourg's goal tally first, score column indicates score after each Olesen goal.
+ List of international goals scored by Mathias Olesen No Date Venue Opponent Score Result Competition 1. 16 November 2023 Stade de Luxembourg, Luxembourg City, Luxembourg 1–0 4–1 UEFA Euro 2024 qualifying 2. 26 March 2026 National Stadium, Ta' Qali, Malta 2–0 2–0 2024–25 UEFA Nations League promotion/relegation play-offs
Honours 1.FC Koln 2.Bundesliga: 2024–25 References
External links