A welcome admission of chaps' compliance (9)
I believe the answer is:
agreement
'compliance' is the definition.
(thesaurus)
'a welcome admission of chaps'' is the wordplay.
I cannot quite understand how this works, but
'a' is within the answer.
'chaps'' could be 'men' (chap can mean a man) and 'men' is found in the answer.
'welcome' could be 'greet' (to greet someone is to welcome them) and 'greet' is present in the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for agreement that I've seen before include "Union < matching" , "State of being consistent" , "legal contract maybe" , "Correspondence" , "Contract or promise" .)