Eminent man's cry of surprise about foreign currency (7)
I believe the answer is:
grandee
'eminent man's' is the definition.
(I've seen this before)
'cry of surprise about foreign currency' is the wordplay.
'cry of surprise' becomes 'gee' (expression of surprise).
'about' indicates putting letters inside.
'foreign currency' becomes 'rand' (I've seen this in another clue).
'gee' enclosing 'rand' is 'GRANDEE'.
(Other definitions for grandee that I've seen before include "Spanish bigwig" , "man of high rank abroad" , "Eminent man" , "Person of eminence" , "Angered over Spanish noble" .)