Young man carrying English guide (4)
I believe the answer is:
lead
'guide' is the definition.
(synonyms)
'young man carrying english' is the wordplay.
'young man' becomes 'lad' (I've seen this before).
'carrying' indicates putting letters inside.
'english' becomes 'e' (abbreviation).
'lad' placed around 'e' is 'LEAD'.
(Other definitions for lead that I've seen before include "Leash -- Pb" , "Be in charge of; metal" , "One with starring role" , "Precede; element" , "Primary" .)