Russell Martin refused to be drawn on whether Nico Raskin has played his last match for Rangers after leaving the midfielder out against Celtic.
The Belgian internationalist was not included in the matchday squad for the Scottish Premiership derby contest on Sunday.
Raskin had trained away from the Rangers squad in the build-up to the match and it has been suggested he was "banished from Ibrox" for the match, according to Kris Boyd.
Asked on BBC Sportsound whether Raskin has played his last match for Rangers, Martin said: "I don't know. Who knows?
"It's not about me or Nico. It's not a personal thing at all. All my energy is on [the team]."
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On Sky Sports, he added: "Well, I just think...every decision I make is not about me, is not about individual players because no one is bigger than the football club.
"Every decision we make and I make as a head coach is for what I deem to be the best for the team on that given day.
"I have picked a squad today that will always put the team first, will be capable of winning this game and be together on the pitch.
"Outside of that, all my energy is focused on them."
Boyd commented: "I don't know what is going on at the training centre or that right now, but in terms of people questioning managers and being opinionated, I think it is something you need to deal with, and there is maybe a lack of that in the dressing room.
"If there is only one person doing it then it might be a case that you feel he is going against you.
"Russell Martin has taken the decision today to not only leave him out his starting XI but to banish him from the stadium altogether.
"He is not here."
