Player finds intuition in a thin novel (8)
I believe the answer is:
thespian
'player' is the definition.
(I know that player can be written as thespian)
'intuition in a thin novel' is the wordplay.
'intuition' becomes 'ESP' (extra-sensory perception).
'in' is an insertion indicator.
'novel' is an anagram indicator (letters in a new or novel order).
'a'+'thin'='athin'
'athin' is an anagram of 'thian'.
'esp' inserted into 'thian' is 'THESPIAN'.
'finds' acts as a link.
(Other definitions for thespian that I've seen before include "Stage actor" , "Dramatic actor" , "He paints (anag)" , "Theatrical performer" , "Relating to the theatre" .)