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Jan Kirchhoff, a German professional footballer, has announced his retirement from the game at the age of 32. Kirchhoff, who played as a centre-back, made over 200 appearances for Schalke 04 and Sunderland during his career. He also represented Germany at international level, winning 11 caps. Kirchhoff announced his retirement on 17 July 2021, citing a long-term knee injury as the reason.