Heartless man? I grab him wandering in city (10)
I believe the answer is:
birmingham
'city' is the definition.
(Birmingham is an example)
'heartless man? i grab him wandering' is the wordplay.
'heartless' says to hollow out the word (remove centre letters).
'wandering' indicates an anagram.
'man' with its middle taken out is 'mn'.
'mn'+'i'+'grab'+'him'='mnigrabhim'
'mnigrabhim' anagrammed gives 'BIRMINGHAM'.
'in' acts as a link.
(Other definitions for birmingham that I've seen before include "Brum" , "Second largest UK city" , "Aston Villa's local rivals, the Blues" , "England's second biggest city" .)