Carry out currency for elder (5)
I believe the answer is:
doyen
'elder' is the definition.
(thesaurus)
'carry out currency' is the wordplay.
'carry out' becomes 'do' (synonyms).
'currency' becomes 'yen' (Japanese currency).
'do'+'yen'='DOYEN'
'for' acts as a link.
(Other definitions for doyen that I've seen before include "Senior member of a profession or academy" , "Respected expert" , "Most valued prof, eg" , "Senior member of a professional group" , "respected figure" .)