Reveal change for one who is departing (6)
I believe the answer is:
leaver
'one who is departing' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'reveal change' is the wordplay.
'change' indicates anagramming the letters.
'reveal' is an anagram of 'LEAVER'.
'for' is the link.
Can you help me to learn more?
(Other definitions for leaver that I've seen before include "One departing" , "Person departing" .)