Satie's extremely feisty English exclusive will please (7)
I believe the answer is:
satisfy
'please' is the definition.
(to satisfy someone is to please them)
'satie's extremely feisty' is the wordplay.
'satie's' becomes 'satis' (I can't justify this - if you can you should give a lot more credence to this answer).
'extremely' suggests removing the centre (only the extremes of the word are used).
'feisty' with its centre taken out is 'fy'.
'satis'+'fy'='SATISFY'
'english exclusive will' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for satisfy that I've seen before include "Fulfil, gratify" , "Provide enough" , "Meet a want or need" , "Meet expectations" , "Content" .)