Clubs overhaul declaration of faith (5)
I believe the answer is:
credo
'declaration of faith' is the definition.
'credo' can be an answer for 'faith' (I've seen this before). I'm not sure about the 'declaration of' bit.
'clubs overhaul' is the wordplay.
'clubs' becomes 'c' (abbreviation used in card games such as bridge).
'overhaul' becomes 're-do' (I've seen this in another clue).
'c'+'redo'='CREDO'
Can you help me to learn more?
(Other definitions for credo that I've seen before include "Belief system" , "Formal statement of beliefs" , "Words to live by; belief" , "System of principles" , "mission statement" .)