The official sponsorship agreement between the German club and Rheinmetall, which has been in place since 2024, expires on June, 30, 2027. Borussia Dortmund says it won't renew a sponsorship deal with Germany's largest arms manufacturer Rheinmetall, which drew criticism from fans. Borussia Dortmund, following more than two years of supporter protests and criticism from club members, will not renew their controversial sponsorship agreement with arms manufacturer Rheinmetall.