Implant not yet removed we hear (6)
I believe the answer is:
Here is my best explanation:
'implant' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
(Other definitions for instil that I've seen before include "Inject ideas into mind", "Infuse (something) slowly into the mind", "Gradually establish something in a person's mind", "Introduce gradually into mind, say ideas", "Drop in to", "Gradually establish (in someone's mind)", "implant?", "Plant gradually into the mind", "Inculcate" and "Implant (in the mind)".)