Star setter's raised to finish (6)
I believe the answer is:
legend
'star' is the definition.
(both can mean an iconic person)
'setter's raised to finish' is the wordplay.
'setter' becomes 'gel' (something which sets).
'raised' says the letters should be written in reverse (going up in a down clue).
'to finish' becomes 'end' ('end' can be a synonym of 'finish').
'gel' reversed gives 'leg'.
'leg'+'end'='LEGEND'
(Other definitions for legend that I've seen before include "Old tale" , "Former top player" , "hero" , "Footnote" , "Saga" .)