Change of street and the French relocate (8)
I believe the answer is:
resettle
'relocate' is the definition.
(resettling is a kind of relocating)
'change of street and the french' is the wordplay.
'change of' is an anagram indicator.
'and' says to put letters next to each other.
'the french' becomes 'le' ('the' in French).
'street' anagrammed gives 'resett'.
'resett'+'le'='RESETTLE'
(Other definitions for resettle that I've seen before include "Take up residence in a different place" , "Move to live in a different place" , "Take up living in a different place" , "Colonise again" , "Move to new state" .)