Gold I'd returned to king, initially satisfying accountants (8)
I believe the answer is:
auditors
'accountants' is the definition.
(auditor is a kind of accountant)
'gold i'd returned to king initially satisfying' is the wordplay.
'gold' becomes 'Au' (Au is the chemical symbol for gold).
'returned' says the letters should be written backwards.
'king' becomes 'R' (abbreviation for rex, king in Latin).
'initially' suggests taking the first letters.
The first letter of 'satisfying' is 's'.
'id' back-to-front is 'di'.
'au'+'di'+'to'+'r'+'s'='AUDITORS'
(Other definitions for auditors that I've seen before include "They check the accounts annually" , "checkers - with 12a" .)