Turn game perhaps causing debate (8)
I believe the answer is:
argument
'debate' is the definition.
(I know that debate can be written as argument)
'turn game perhaps' is the wordplay.
'perhaps' indicates anagramming the letters.
'turn'+'game'='turngame'
'turngame' with letters rearranged gives 'ARGUMENT'.
'causing' is the link.
(Other definitions for argument that I've seen before include "Heated exchange" , "Contentious debate" , "Tiff" , "Heated disagreement" , "Opposed points of view" .)