You and I organise sale of creature (6)
I believe the answer is:
weasel
'creature' is the definition.
The definition and answer can be both animals as well as being singular nouns.
Maybe there's an association between them I don't understand?
'you and i organise sale' is the wordplay.
'you and i' becomes 'we'.
'organise' indicates an anagram (I've seen 'organised' mean this).
'sale' is an anagram of 'asel'.
'we'+'asel'='WEASEL'
'of' is the link.
Can you help me to learn more?
(Other definitions for weasel that I've seen before include "Stoat-like animal" , "Small fierce animal with slender body and reddish fur" , "Double-dealer" , "Equivocate - small animal" , "Carnivorous mammal; treacherous person" .)