Lease signatory (6)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
tenant
'lease signatory' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tenant that I've seen before include "one paying rent" , "Occupant of rented property" , "Lodger" , "he or she rents" , "his flat?" .)