Player on bench has point of view that's material (9)
I believe the answer is:
substance
'material' is the definition.
(thesaurus)
'player on bench has point of view' is the wordplay.
'player on bench' becomes 'sub' (substitute in football, for example).
'has' is a charade indicator (letters next to each other).
'point of view' becomes 'stance' (I've seen this before).
'sub'+'stance'='SUBSTANCE'
'that's' is the link.
(Other definitions for substance that I've seen before include "Subject matter" , "Physical matter" , "Basic matter" , "wealth" , "Matter or material that a thing is made of" .)