Snarl, seeing approach after gent loses head (8)
I believe the answer is:
entangle
'snarl' is the definition.
(I've seen this before)
'approach after gent loses head' is the wordplay.
'approach' becomes 'angle' (as in a journalist's approach to a story).
'after' says to put letters next to each other.
'loses head' means to remove the first letter.
'gent' with its first letter removed is 'ent'.
'angle' after 'ent' is 'ENTANGLE'.
'seeing' is the link.
(Other definitions for entangle that I've seen before include "Create confusion" , "Get all twisted up" , "Make twisted" , "Involve undesirably" , "Ravel" .)