Black businessman ran scams to cut cash on delivery (6)
I believe the answer is:
conrad
'black businessman' is the definition.
(Conrad Black is a businessman)
'ran scams to cut cash on delivery' is the wordplay.
'scams' indicates an anagram (I've seen 'scam' mean this (I've seen this in other clues)).
'to cut' is an insertion indicator.
'cash on delivery' becomes 'C.O.D.' (synonyms).
'ran' with letters rearranged gives 'nra'.
'nra' going inside 'cod' is 'CONRAD'.
(Other definitions for conrad that I've seen before include "Joseph --, writer (Lord Jim)" , "Joseph --, author" , "Joseph ---, Polish-born novelist" , "Author of Lord Jim" , "Joseph ...... wrote 'Lord Jim'" .)