Decide not to be involved in work with dodgy ticket seller (3,3)
I believe the answer is:
opt out
'decide not to be involved' is the definition.
I can't judge whether this definition defines the answer.
'work with dodgy ticket seller' is the wordplay.
I cannot quite see how this works, but
'work' could be 'op' (abbreviation for opus) and 'op' is present in the answer.
'seller' could be 'tout' (tout is a kind of seller) and 'tout' is found in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'in' is the link.
Can you help me to learn more?
(Other definitions for opt out that I've seen before include "'Choose not to take part (3,3)'" , "Decline to participate" , "Choose to be excluded" , "Decide to withdraw" , "Choose not to participate" .)