Letter to arrive for master (8)
I believe the answer is:
landlord
'letter' is the definition.
(I know that landlord is a type of letter)
'arrive for master' is the wordplay.
'arrive' becomes 'land' (landing is a kind of arriving).
'for' says to put letters next to each other.
'master' becomes 'lord' (synonyms).
'land'+'lord'='LANDLORD'
'to' is the link.
(Other definitions for landlord that I've seen before include "ones under the table he might throw out" , "He owns the building, collects the rent" , "Male lessor" , "He wants letters" , "One with property for rent" .)