Fellow at the entrance about to provide label with ID (4,3)
I believe the answer is:
name tag
'label with id' is the definition.
'fellow at the entrance about' is the wordplay.
'fellow at the entrance' becomes 'gateman'.
'about' shows that the letters should be reversed in order.
'gateman' backwards is 'NAME TAG'.
'to provide' acts as a link.
(Other definitions for name tag that I've seen before include "A magnet (anag) - identification" , "Label to identify" , "Form of ID" , "One identifying" , "ID carrier" .)