Lover soon having despicable person over (9)
I believe the answer is:
inamorato
'lover' is the definition.
(I know that inamorato is a type of lover)
'soon having despicable person over' is the wordplay.
'soon' becomes 'in a mo' (in a mo).
'having' means one lot of letters go next to another.
'despicable person' becomes 'rat' (I've seen this before).
'over' becomes 'o' (cricket abbreviation).
'inamo'+'rat'+'o'='INAMORATO'
(Other definitions for inamorato that I've seen before include "One who's fond of" , "He loves" , "Italian lover" , "Male lover" , "Beau" .)