Sunderland captain Dan Neil has revealed frustrations were aired in the dressing room after the Black Cats suffered a fourth successive defeat against Oxford United on Saturday.
Regis Le Bris has rotated his side in recent games since a spot in the Championship play-offs was confirmed but fielded his strongest possible starting 11 at the Kassam Stadium.
Neil told BBC Radio Newcastle: "Things were said in the dressing room which I think are good for the squad to be honest.
"We don't have long left til the play-offs to figure out what's happened in the last few weeks.