Wanderer game days cut into half-time (8)
I believe the answer is:
gadabout
'wanderer' is the definition.
(thesaurus)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for gadabout that I've seen before include "Restless seeker after amusement" , "Pleasure-seeker" , "Vagrant" , "Rover" , "Person who goes around aimlessly" .)