Classic novel and French articles upset Macron? (8)
I believe the answer is:
emmanuel
'macron?' is the definition.
(Emmanuel Macron)
'classic novel and french articles upset' is the wordplay.
'classic novel' becomes 'emma'.
'and' becomes 'n' (common abbreviation for 'and').
'french articles' becomes 'leu' (I am not sure about this - if you are sure you should believe this answer much more).
'upset' says the letters should be written in reverse.
'leu' written backwards gives 'uel'.
'emma'+'n'+'uel'='EMMANUEL'
(Other definitions for emmanuel that I've seen before include "Boy" , "The Messiah" , "Man" , "Lame menu (anag) - Cambridge college" , "Messiah's name (Is. 7.14)" .)