 Cash-strapped, Schalke had to sell him to arch-rival side Borussia Dortmund at that time with Rüssmann staying on at Westfalenstadion until he retired in 1985 after 48 goals in 453 Bundesliga matches.Before the 2015/15 season only 23 players had amassed more appearances in the Bundesliga than Rüssmann.A respected youth international for West Germany, Rüssmann was already on the verge of a West Germany debut in 1971, but then saw his hopes ruined by his role in the match fixing "Bundesligaskandal".