Some wrangle as expecting contract (5)
I believe the answer is:
lease
'contract' is the definition.
(I know that lease is a type of contract)
'some wrangle as expecting' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'LEASE' is hidden in the letters of 'wrangle as expecting'.
(Other definitions for lease that I've seen before include "Letting contract" , "From legal document" , "Let; rent" , "Contract to rent" , "Ghost" .)