Jan-Henrik Gruszecki
Jan-Henrik Gruszecki is a former ultra-leader who has gained significant influence in German football, serving as the strategy chief for Borussia Dortmund's long-time club chief Hans-Joachim Watzke. His leadership skills, honed through years of managing a large group of passionate fans, have allowed him to transition into a key executive role, where he advocates for the interests of the fanbase within the club's operations.
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Switzerland:
Jan-Henrik Gruszecki was one of the most influential officials at Borussia Dortmund.
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