It's a French problem, so disengage (7)
I believe the answer is:
unhitch
'disengage' is the definition.
The answer and definition can be both to do with contact as well as being verbs in their base form.
Perhaps you can see a link between them that I can't see?
'it's a french problem' is the wordplay.
'it's a french' becomes 'un' ('a' in French).
'problem' becomes 'hitch' (a hitch is a problem or difficulty).
'un'+'hitch'='UNHITCH'
'so' is the link.
Can you help me to learn more?
(Other definitions for unhitch that I've seen before include "divorce?" , "Separate" , "Part" , "free?" , "Release" .)