Outbreak after clubs go bust (5)
I believe the answer is:
crash
'bust' is the definition.
(thesaurus)
'outbreak after clubs' is the wordplay.
'outbreak' becomes 'rash' (rash can mean a sudden outbreak).
'after' is a charade indicator (letters next to each other).
'clubs' becomes 'c' (abbreviation in card games).
'rash' put after 'c' is 'CRASH'.
'go' is the link.
(Other definitions for crash that I've seen before include "Car accident" , "Dramatic fall" , "Bang" , "Economic collapse" , "Disastrous market fall" .)