Annoyed as a new greed develops (7)
I believe the answer is:
angered
'annoyed' is the definition.
'a new greed develops' is the wordplay.
'a new' becomes 'an' (I've seen this in other clues).
'develops' is an anagram indicator.
'greed' anagrammed gives 'gered'.
'an'+'gered'='ANGERED'
'as' acts as a link.
(Other definitions for angered that I've seen before include "Very annoyed" , "Infuriated" , "En garde (anag.)" , "Enraged (anag)" , "In high dudgeon" .)