Father due to turn up for psychiatrist (5)
I believe the answer is:
freud
'psychiatrist' is the definition.
(thesaurus)
'father due to turn up' is the wordplay.
'father' becomes 'fr'.
'to turn up' says the letters should be written backwards.
'due' written backwards gives 'eud'.
'fr'+'eud'='FREUD'
'for' acts as a link.
(Other definitions for freud that I've seen before include "See 9" , "See 8" , "Sigmund -, Austrian neurologist" , "Sigmund ...., great psychiatrist" , "Painter" .)