Keep away; there's nothing to get greedy about (5)
I believe the answer is:
avoid
'keep away' is the definition.
(I've seen this in another clue)
'nothing to get greedy about' is the wordplay.
I cannot really understand how this works, but
'nothing' could be 'o' (O resembles 0) and 'o' is found in the answer.
'greedy' could be 'avid' (synonyms) and 'avid' is found in the remaining letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
'there's' is the link.
Can you help me to learn more?
(Other definitions for avoid that I've seen before include "Keep away from (someone/something)" , "Desist" , "(If you can't 10), keep away from" , "Duck" , "Run away from" .)