Interest in the homecoming (6)
I believe the answer is:
return
This clue is a double definition.
'interest' is the first definition.
(thesaurus)
'homecoming' is the second definition.
('return' can be a synonym of 'homecoming')
'in the' is the link.
(Other definitions for return that I've seen before include "second half of journey" , "Come back; profit" , "Profit earned on money" , "Send/come back" , "Give or come back" .)