Luis Suarez led a home locker room inquest after Barcelona's 1-1 draw with Athletic Bilbao.
AS says the raised voices could be heard for little over a minute, with Suarez heard in the players' tunnel.
"We cannot continue like this," barked the Uruguayan. "What we do in the League runs into the Champions League."
Lionel Messi could also be heard, though the comments lasted less than two minutes.
The message from senior players is things must improve quickly or their season could soon be already over.