Parisian university in pain about German city (8)
I believe the answer is:
sorbonne
'parisian university' is the definition.
(I've seen this before)
'pain about german city' is the wordplay.
'pain' becomes 'sore' (I've seen this before).
'about' means one lot of letters goes inside another.
'german city' becomes 'bonn' (city in Germany).
'sore' enclosing 'bonn' is 'SORBONNE'.
'in' is the link.
(Other definitions for sorbonne that I've seen before include "Non-Boers go over to this French university" , "Parisian university" , "Parisian institution" , "Common name for the University of Paris" , "Famous part of Paris University with literature and science faculties" .)