Nevada city set one right back (4)
I believe the answer is:
reno
'nevada city' is the definition.
(I've seen this in another clue)
'set one right back' is the wordplay.
I cannot really see how this works, but
an anagram of 'one' is 'eno' which is located in the answer.
'right' could be 'r' (common abbreviation) and 'r' is located in the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for reno that I've seen before include "Nevada gambling resort" , "Nevadan city" , "City in Nevada known for casinos and easy divorces" , "City in Nevada noted for quickie divorces" , "Nevada marriage and divorce centre" .)