 He finished his career in the second division with Hannover 96, retiring at almost 36; he later had a go at managing in amateur football, mainly with VSK Osterholz-Scharmbeck.Hermann recorded just two international caps for West Germany in his professional career, making his debut on 21 September 1988, in a friendly against the Soviet Union (1–0) in Düsseldorf.His other appearance took place in the final test of the nation ahead of the 1990 FIFA World Cup, playing nine minutes in another 1–0 success, on 30 May, against Denmark.