Be longer perhaps in French location (8)
I believe the answer is:
grenoble
'french location' is the definition.
The definition suggests a singular noun which matches the answer.
'be longer perhaps' is the wordplay.
'perhaps' indicates anagramming the letters.
'be'+'longer'='belonger'
'belonger' anagrammed gives 'GRENOBLE'.
'in' is the link.
Can you help me to learn more?
(Other definitions for grenoble that I've seen before include "City of alpine France, capital of the Isere department" , "City of SE France" , "City of southeast France" , "City of south-eastern France" , "European city" .)