Young reporter has article on Caribbean island (4)
I believe the answer is:
cuba
'caribbean island' is the definition.
(I've seen this before)
'young reporter has article' is the wordplay.
'young reporter' becomes 'cub' (I've seen this in other clues).
'has' means one lot of letters go next to another.
'article' becomes 'a' (indefinite article).
'cub'+'a'='CUBA'
'on' is the link.
(Other definitions for cuba that I've seen before include "Fidel's place" , "Island N. of Jamaica" , "Largest Caribbean island" , "detached area" , "Caribbean nation" .)