With “Hey, you!” following the man again (4)
I believe the answer is:
here
'with hey you' is the definition.
I can't judge whether this definition defines the answer.
'following the man again' is the wordplay.
'following' is a charade indicator (letters next to each other).
'the man' becomes 'he' (**).
'again' becomes 're'.
'he' next to 're' is 'HERE'.
Can you help me to learn more?
(Other definitions for here that I've seen before include "To hand" , "In this place - present" , "At this stage" , "Present; I say!" , "The present location" .)