He puts money on a footballer (6)
I believe the answer is:
punter
'footballer' is the definition.
(I know that punter is a type of kicker)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for punter that I've seen before include "Better - rugby player - river boatman" , "A colloquial better or a regular client" , "boater" , "One betting; 4's prey (slang)" , "Informally, a customer or someone who bets" .)