Actor, also potentially one ideal to men? (7,4)
I believe the answer is:
matinee idol
'actor' is the definition.
(I know that matinee idol is a type of lead)
'potentially one ideal to men?' is the wordplay.
'potentially' indicates an anagram (letters have the potential to spell a new word).
'one' becomes 'i' (Roman numeral).
'i'+'ideal'+'to'+'men'='iidealtomen'
'iidealtomen' is an anagram of 'MATINEE IDOL'.
'also' acts as a link.
(Other definitions for matinee idol that I've seen before include "Actor, popular romantic figure amongst women" , "Handsome actor" .)