Frenchmen, I allow, will pursue one person new to the country? (9)
I believe the answer is:
immigrant
'person new to the country?' is the definition.
I can't tell whether this defines the answer.
'frenchmen i allow will pursue one' is the wordplay.
'frenchmen' becomes 'MM' (two M's - M is short for Monsieur).
'allow will' becomes 'grant' (I am not sure about this - if you are sure you should believe this answer much more).
'pursue' means one lot of letters go next to another.
'one' becomes 'i' (Roman numeral).
'mm'+'i'+'grant'='mmigrant'
'mmigrant' after 'i' is 'IMMIGRANT'.
Can you help me to learn more?
(Other definitions for immigrant that I've seen before include "Settler, incomer" , "A settler from abroad" , "He's moved in" , "One joining country" , "One moving from abroad" .)