Port may be answer, with both sides saving money (9)
I believe the answer is:
archangel
'port' is the definition.
(city and port in Archangelsk oblast, Russia)
'answer with both sides saving money' is the wordplay.
'answer' becomes 'a' (abbreviation eg in Q and A).
'with' means one lot of letters go next to another.
'both sides' becomes 'RL' (abbreviation for left and right).
'saving' is an insertion indicator.
'money' becomes 'change' (I've seen this before).
'rl' going around 'change' is 'rchangel'.
'a'+'rchangel'='ARCHANGEL'
'may be' is the link.
(Other definitions for archangel that I've seen before include "Russian city" , "The head celestial messenger" , "Divine messenger - Russian port" , "Most important of divine messengers" , "Nag Rachel (anag.)" .)