German district capital is not quite New York (5)
I believe the answer is:
gotha
'german district capital' is the definition.
(German city)
'not quite new york' is the wordplay.
'not quite' means to remove the last letter (most but not all of the word).
'new york' becomes 'Gotham' (Gotham is a nickname for New York).
'gotham' with its last letter removed is 'GOTHA'.
'is' is the link.
(Other definitions for gotha that I've seen before include "city in Thuringia" , "old German town" .)