Gold-digger reports cop for corruption (10)
I believe the answer is:
prospector
'gold-digger' is the definition.
(I've seen this before)
'reports cop for corruption' is the wordplay.
'for corruption' indicates anagramming the letters (I've seen this in other clues).
'reports'+'cop'='reportscop'
'reportscop' is an anagram of 'PROSPECTOR'.
(Other definitions for prospector that I've seen before include "Gold-digger" , "Clementine's father, perhaps?" , "One searching for valuable minerals" , "Searcher after valuable ores" , "Searcher for minerals" .)