Comes down to the country on Sunday (5)
I believe the answer is:
lands
'comes' is the definition.
(landing is a kind of coming)
'the country on sunday' is the wordplay.
'the country' becomes 'land' (synonyms).
'on' means one lot of letters go next to another (in a down clue, letters appear on others).
'sunday' becomes 's'.
'land'+'s'='LANDS'
'down to' is the link.
(Other definitions for lands that I've seen before include "See 21" , "Obtains" , "Alights" , "Comes ashore" .)