Emily is out to find an Englishman abroad (5)
I believe the answer is:
limey
'an englishman abroad' is the definition.
'emily is out' is the wordplay.
'is out' indicates anagramming the letters (out can mean wrong or inaccurate).
'emily' anagrammed gives 'LIMEY'.
'to find' is the link.
(Other definitions for limey that I've seen before include "British person (in Australia)" , "US term for Englishman" , "Briton" , "One of us in US" , "British sailor" .)