Man turned up during final attack (4)
I believe the answer is:
alan
'man' is the definition.
'turned up during final attack' is the wordplay.
'turned up' says the letters should be written backwards.
'during' says the answer is hidden in the clue.
'nala' is hidden within 'final attack'.
'nala' in reverse letter order is 'ALAN'.
(Other definitions for alan that I've seen before include "English name" , "-- Bennett, playwright" , "-- Ayckbourn, English dramatist" , "- Ayckbourn, English playwright" , "Lana (anag.), man's name" .)