Deal we made with Spooner is easy to handle (6)
I believe the answer is:
wieldy
'easy to handle' is the definition.
(I've seen this in another clue)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for wieldy that I've seen before include "Easy to control" , "Manageable" , "Easy to manage" .)