Popular listeners after arrival may be overdue (2,7)
I believe the answer is:
in arrears
'overdue' is the definition.
('in arrears' can be a synonym of 'overdue')
'popular listeners after arrival' is the wordplay.
'popular' becomes 'in'.
'listeners' becomes 'ears'.
'after' means one lot of letters go next to another.
'arrival' becomes 'arr' (abbreviation used in transport).
'ears' after 'arr' is 'arrears'.
'in'+'arrears'='IN ARREARS'
'may be' acts as a link.
(Other definitions for in arrears that I've seen before include "Behindhand (with rent)" , "Position when a debt remains unpaid after its due date" , "Rare rains beyond the due time" , "Behind with payments" , "Overdue" .)