Extremely controversial affair producing uproar (7)
I believe the answer is:
clamour
'uproar' is the definition.
(I've seen this before)
'extremely controversial affair' is the wordplay.
'extremely' suggests removing the centre (only the extremes of the word are used).
'affair' becomes 'amour' (amour can mean a love affair).
'controversial' with its centre removed is 'cl'.
'cl'+'amour'='CLAMOUR'
'producing' is the link.
(Other definitions for clamour that I've seen before include "Loud and persistent outcry" , "racket" , "Loud noise of shouting" , "Hue and cry" , "Noisy disturbance" .)