Some men in Exeter: how many? (4)
I believe the answer is:
nine
'many?' is the definition.
(example)
'some men in exeter' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'NINE' is hidden within 'men in exeter'.
'how' acts as a link.
(Other definitions for nine that I've seen before include "SECOND PART OF 14" , "and 23: Flash in the pan" , "Cat's lives? - the next clue?" , "Short time for a wonder" , "One's married partner" .)