Policeman in charge intercepting tender (7)
I believe the answer is:
officer
'policeman' is the definition.
('officer' can be a synonym of 'policeman')
'in charge intercepting tender' is the wordplay.
'in charge' becomes 'ic'.
'intercepting' means one lot of letters goes inside another (I've seen this in other clues).
'tender' becomes 'offer' ('offer' can be a synonym of 'tender').
'ic' placed within 'offer' is 'OFFICER'.
(Other definitions for officer that I've seen before include "Person with authority or command" , "Person holding a commission in the services" , "Public servant" , "Military person in authority" , "Serviceman (or woman) of rank" .)