Talk on European with gold from French castle (7)
I believe the answer is:
chateau
'french castle' is the definition.
('castle' in French)
'talk on european with gold' is the wordplay.
'talk' becomes 'chat' (I've seen this before).
'on' says to put letters next to each other.
'european' becomes 'E' (abbreviation e.g. EU).
'with' is a charade indicator (letters next to each other).
'gold' becomes 'Au' (Au is the chemical symbol for gold).
'chat'+'e'+'au'='CHATEAU'
'from' is the link.
(Other definitions for chateau that I've seen before include "Castle (1)" , "eg Margaux" , "Impressive house in France" , "Country residence" , "French palace" .)