Pop article seen in French newspaper (8)
I believe the answer is:
lemonade
'pop' is the definition.
(I've seen this before)
'article seen in french newspaper' is the wordplay.
'article' becomes 'a' (the indefinite article in English).
'seen in' means one lot of letters goes inside another.
'french newspaper' becomes 'le monde' (I've seen this before).
'a' put within 'lemonde' is 'LEMONADE'.
(Other definitions for lemonade that I've seen before include "Ale demon (anag)" , "Soft drink; Noel made (anag.)" , "This should refresh" , "Mo leaned on the drink" , "Sweet carbonated drink" .)