Subsequently, Tinseltown star Charlize dumps husband (5,2)
I believe the answer is:
later on
'subsequently' is the definition.
(subsequently means later on)
'tinseltown star charlize dumps husband' is the wordplay.
'tinseltown' becomes 'la' (Tinseltown is a nickname for Hollywood in LA).
'star charlize' becomes 'Theron' (actress Charlize Theron).
'dumps' indicates named letters should be taken away.
'husband' becomes 'h'.
'theron' with 'h' removed is 'teron'.
'la'+'teron'='LATER ON'
(Other definitions for later on that I've seen before include "in the future" , "'Subsequently, afterward (5,2)'" , "In the fullness of time" , "Afterwards" , "this evening?" .)