Psychoanalyst expected back on Friday (5)
I believe the answer is:
freud
'psychoanalyst' is the definition.
(Sigmund Freud, father of psychoanalysis)
'expected back on friday' is the wordplay.
'expected' becomes 'due' (similar in meaning).
'back' shows that the letters should be reversed in order.
'on' says to put letters next to each other.
'friday' becomes 'fr' (abbreviation).
'due' in reverse letter order is 'eud'.
'eud' after 'fr' is 'FREUD'.
(Other definitions for freud that I've seen before include ""Father" of psychoanalysis" , "Sigmund -, Austrian neurologist" , "Sigmund --, psychoanalyst" , "Psychoanalysis pioneer" , "Sigmund ...., great psychiatrist" .)