Man finally opening unopened can in port (8)

I believe the answer is:

benghazi

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'port' is the definition.
(I have seen 'African port' mean 'benghazi' so perhaps 'port' could also mean 'benghazi')

'man finally opening unopened can' is the wordplay.
'man' becomes 'Ben'.
'finally opening unopened can' becomes 'ghazi' (I can't justify this - if you can you should give a lot more credence to this answer).
'ben'+'ghazi'='BENGHAZI'

'in' is the link.

Can you help me to learn more?

(Other definitions for benghazi that I've seen before include "Libya's second most populous city" , "African port" .)

I've seen this clue in The Telegraph.

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