One of eleven English, American and French men in foreign museum
I believe the answer is:
team-mate
'one of eleven english' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe you can see a link between them that I don't see?
'american and french men in foreign museum' is the wordplay.
I cannot quite see how this works, but
'american' could be 'am' (abbreviation in some contexts) and 'am' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for team-mate that I've seen before include "Fellow competitor" , "Sporting ally" .)