The most common and most likely answer to this crossword clue is the 8 letter word CREDITOR
I've seen this crossword clue in The Guardian
C
R
E
D
I
T
O
R
More clues leading to the result CREDITOR
- Person owed money upset Dorrit etc, heartlessly
- Sacked director to whom one owes money
- Lender cried out to Rishi initially
- Journo following constant rule, to whom one’s indebted
- Director worked out he’s owed money
- The settlement is due to him
- Extremely clever journalist to whom one is in debt
- Shark, maybe clever, cleaned out Fleet Street boss
- Managing director reveals someone owed a debt
- Soldiers must support recognition one’s responsible for advance
Buddy explains!

The straight part
We know that "The settlement is due to him" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case the settlement is due to him = creditor.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CREDITOR mean?
CREDITOR noun- A person to whom a debt is owed.
- One who gives credence to something; a believer.