Former player is now collecting taxes (7)
I believe the answer is:
exactor
'now collecting taxes' is the definition.
I can't judge whether this definition defines the answer.
'former player' is the wordplay.
'former' becomes 'ex' (prefix meaning former or onetime).
'player' becomes 'actor' (synonyms).
'ex'+'actor'='EXACTOR'
'is' acts as a link.
Can you help me to learn more?
(Other definitions for exactor that I've seen before include "He demands payment" , "Core tax (anag.)" , "demanding sort" , "Extortioner" , "demanding type" .)