Legendary one saved squirrels (7)
I believe the answer is:
storied
'legendary' is the definition.
(I've seen this in another clue)
'one saved squirrels' is the wordplay.
I cannot really understand how this works, but
'one' could be 'i' (Roman numeral) and 'i' is found in the answer.
'saved' could be 'stored' (I've seen this in another clue) and 'stored' is located in the remaining letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for storied that I've seen is " Fabled".)