Complex sentence: There he played well enough that in 1978 Hamburger SV (HSV) bought him, where he blossomed into one of the most productive forwards of the Bundesliga with 96 goals in only 159 matches and was soon called up for the West German national team.
Split into simpler sentences: There he played well enough that in 1978 Hamburger SV (HSV) bought him. At Hamburg he blossomed into one of the most productive forwards of the Bundesliga with 96 goals in only 159 matches and was soon called up for the West German national team.