Heroic person will free redhead (7)
I believe the answer is:
rescuer
'heroic person' is the definition.
'rescuer' can be an answer for 'person' (rescuer is a kind of person). I'm unsure of the 'heroic' bit.
'free redhead' is the wordplay.
'free' becomes 'rescue' (I've seen this in another clue).
'redhead' becomes 'r' (the head/first letter of 'red').
'rescue'+'r'='RESCUER'
'will' acts as a link.
Can you help me to learn more?
(Other definitions for rescuer that I've seen before include "One who delivers" , "One who saves from a dangerous situation" , "one retrieves" , "One who saves another from peril" , "Deliverer (from danger)" .)