Put friend last? Do you indeed! (8)
I believe the answer is:
actually
'indeed' is the definition.
(thesaurus)
'put friend' is the wordplay.
'put' becomes 'actu' (I can't justify this - if you can you should believe this answer much more).
'friend' becomes 'ally' (an ally is a friend or supporter).
'actu'+'ally'='ACTUALLY'
'last? do you' acts as a link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for actually that I've seen before include "A lay cult may be existing in fact" , "Really existing" , "Really, in fact" , "In reality" , "As a matter of fact" .)