Rent it leasehold retaining name (7)
I believe the answer is:
entitle
'name' is the definition.
(both can mean to give someone a name)
'rent it leasehold retaining' is the wordplay.
'retaining' indicates a hidden word.
'ENTITLE' is hidden in the letters of 'rent it leasehold'.
(Other definitions for entitle that I've seen before include "Furnish with a right or claim" , "Give a right or authority to" , "Style; give right to" , "Give a right (to someone to do something)" , "Give (someone) rights" .)