Author Kafka (5)
I believe the answer is:
franz
'author kafka' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for franz that I've seen before include "Beckenbauer or Kafka" , "-- Ferdinand, pop group" , "Archduke - Ferdinand, murdered at Sarajevo" , "-- Schubert; -- Liszt" .)