Mateusz Filip Siebert (born 4 April 1989) is a Polish former professional footballer who played as a centre-back.
His father Bernard is a former professional Polish footballer and his mother Renata a former handball player.
[1] He acquired French nationality on 3 November 1998, through the collective effect of his father's naturalization.
[2] He made his Ligue 2 debut in October 2008, coming on as a 25th-minute substitute against LB Châteauroux.
This biographical article related to a Polish association football defender is a stub.