Deputy avers it's front to back and the other way round (4,5)
I believe the answer is:
vice versa
'the other way round' is the definition.
(I've seen this before)
'deputy avers it's front to back' is the wordplay.
I cannot really see how this works, but
'deputy' could be 'vice' (as in vice-president) and 'vice' is present in the answer.
an anagram of 'avers' is 'versa' which is present in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'and' acts as a link.
Can you help me to learn more?
(Other definitions for vice versa that I've seen before include "The other way around" , "otherwise" , "The opposite (also applies)" , "Revise a VC? (anag)" , "back to front" .)