Might the gang be after him? (7)
I believe the answer is:
foreman
'might the gang be after him?' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'gang be after him?' is the wordplay.
'gang' becomes 'fore' (I can't explain this - if you can you should give a lot more credence to this answer).
'be after' means one lot of letters go next to another.
'him?' becomes 'Man'.
'fore'+'man'='FOREMAN'
Can you help me to learn more?
(Other definitions for foreman that I've seen before include "Fellow in charge" , "Gaffer, boss" , "Male supervisor" , "Gaffer, overseer" , "Charge hand" .)