Persuade to copy what’s in sight (6)
I believe the answer is:
incite
'persuade' is the definition.
(thesaurus)
'in sight' is the wordplay.
'sight' becomes 'cite' (I can't justify this - if you can you should give a lot more credence to this answer).
'in'+'cite'='INCITE'
'to copy what's' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for incite that I've seen before include "Goad" , "Foment, urge on" , "Move to action" , "Prompt" , "Provoke - stimulate" .)