He has the will to settle things (8)
I believe the answer is:
executor
'he has the' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'to settle things' is the wordplay.
I cannot quite see how this works, but
'to' is found in the answer.
This explanation may well be incorrect...
'will' acts as a link.
Can you help me to learn more?
(Other definitions for executor that I've seen before include "Overseer of a will" , "One dealing with will" , "Person appointed to carry out the terms of a will" , "Person who carries out the provisions of a will" , "Person carrying out the terms of a will" .)