Ooh, NYC cap has been redesigned - that'll create some clamour (9)
I believe the answer is:
cacophony
'some clamour' is the definition.
(I've seen this before)
'ooh nyc cap has been redesigned that'll' is the wordplay.
'ooh nyc cap' anagrams to 'CACOPHONY'.
But, I'm unsure how the anagram is indicated.
'create' acts as a link.
Can you help me to learn more?
(Other definitions for cacophony that I've seen before include "Discordant mixture of sounds" , "Loud discordant sounds" , "Caterwauling" , "Din" , "Harsh dissonant sound" .)