Finally, can you confirm job references? Thank you, I'll call Charlie (9)
I believe the answer is:
numbskull
'charlie' is the definition.
(I know that charlie can be written as numbskull)
'finally can you confirm job references?' is the wordplay.
'finally' says to take the final letters.
'references?' becomes 'skull' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
The last letters of 'can you confirm job' are 'numb'.
'numb'+'skull'='NUMBSKULL'
'thank you i'll call' 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 numbskull that I've seen before include "Idiot" , "Blockhead, bonehead" , "of limited intelligence" , "Stupid person" , "Fool" .)