Fail to deliver green recycling by European Union retrospectively (7)
I believe the answer is:
renegue
'fail to deliver' is the definition.
'green recycling by european union retrospectively' is the wordplay.
'recycling' is an anagram indicator.
'by' says to put letters next to each other.
'european union' becomes 'eu'.
'retrospectively' is a reversal indicator.
'eu' back-to-front is 'ue'.
'green' with letters rearranged gives 'reneg'.
'reneg'+'ue'='RENEGUE'
(Other definitions for renegue that I've seen before include "Default" , "Go back on one's word" , "Break a promise" , "Break one's word" , "Welsh" .)