European head going round German city (5)
I believe the answer is:
essen
'german city' is the definition.
(city in Germany)
'european head going round' is the wordplay.
'european' becomes 'E' (abbreviation e.g. EU).
'head' becomes 'ness' (ness is a headland).
'going round' says the letters should be written backwards.
'ness' written backwards gives 'ssen'.
'e'+'ssen'='ESSEN'
(Other definitions for essen that I've seen before include "German place name" , "German industrial city on the Ruhr" , "Krupp HQ (Ger.)" , "Industrial city of northwest Germany" , "German industrial centre" .)