Minister who sounds like a Charlie (8)
I believe the answer is:
chaplain
'minister' is the definition.
(I know that Chaplain is a type of minister)
'sounds like a charlie' is the wordplay.
'sounds like' shows a homophone (sound like).
'a charlie' becomes 'Chaplin' (Charlie Chaplin).
'chaplin' is a homophone of 'CHAPLAIN'.
'who' is the link.
(Other definitions for chaplain that I've seen before include "'Member of the clergy, in a hospital, say (8)'" , "Christian clergyman attached to an institution, military body etc" , "Army padre" , "Regimental clergyman" , "Clergyman attached to military unit" .)