One article is enough for him (3)
I believe the answer is:
ian
'enough for him' is the definition.
'Ian' can be an answer for 'him'. I'm unsure of the 'enough for' bit.
'one article' is the wordplay.
'one' becomes 'i' (Roman numeral).
'article' becomes 'an' (indefinite article).
'i'+'an'='IAN'
'is' acts as a link.
Can you help me to learn more?
(Other definitions for ian that I've seen before include "Botham or Chappell?" , "The familiar Mr Paisley" , "- Fleming (James Bond)" , "Sir - McKellen, actor" , "... Fleming, author of the Bond books" .)