What itchy divers do to meet required standards (4,2,2,7)
I believe the answer is:
come up to scratch
'meet required standards' is the definition.
(I've seen this before)
'what itchy divers do to' is the wordplay.
I cannot quite see how this works, but
'do' could be 'come' (synonyms) and 'come' is found within the answer.
'to' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for come up to scratch that I've seen before include "What monkeys down below can do" , "meet required standards" , "suffice?" , "What a diver with eczema might do" , "Diver may be itching to" .)