Opportunity to see government minister roll back out (6)
I believe the answer is:
chance
'opportunity' is the definition.
('chance' can be a synonym of 'opportunity')
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for chance that I've seen before include "I wish (but it won't happen!)" , "Possibility - opportunity" , "Possibility of something happening" , "'Fate, luck, fortune (6)'" , "Luck -a fine thing?" .)