Republic of Ireland international James McClean was involved in a bust-up with team-mates during their 3-0 defeat to Wigan Athletic on Wednesday night.
It has been a nightmare start for McClean and Stoke City under Gary Rowett with just two points from four games in the Championship.
Confirming McClean was part of an altercation involving goalkeeper Jack Butland and captain Ryan Shawcross, Rowett said he was prepared to make changes to address their poor start.
He described his team as "weak and pathetic".
He added: "Reputations now mean nothing. I’ve got to start picking the team on which players deserve to be in, not which players have played in the Premier League for 10 years.
"It was weak and pathetic and if you do that you’re going to lose games of football.
"When you’re not winning games everybody gets a bit edgy and frustrated. We’ve got to take collective responsibility, it’s no good fighting between ourselves."
Stoke host Hull City on Saturday.