Reece James and Hakim Ziyech argued on the pitch in Chelsea's shock Champions League defeat against Dinamo Zagreb.
The Blues suffered a shock 1-0 loss against the Croatian side on Tuesday night to continue their shaky start to the season.
And their woes in the Croatian capital were summed up by James and Ziyech's angry spat over a late free-kick - with Andy Townsend adding it looks like frustrated boss Thomas Tuchel 'looks like he's fighting' with the squad.
One moment in particular at the Stadion Maksimir highlighted the tension in the squad, when Chelsea were awarded a 96th-minute free-kick from a promising position, giving them the chance to snatch a last-gasp equaliser.
Moroccan winger Ziyech - blasted by fans for his 'disasterclass' after coming on at half-time and failing to make an impact - having already curled a set-piece into the wall from 25 yards out, demanded he take this free-kick as well.
James, one of the few Chelsea players to emerge with some credit on the night, remonstrated with Ziyech, shrugging his shoulders frustratedly and trying to make his point - with captain Jorginho not stepping in to mediate.
But the former Ajax wideman pulled rank, throwing his arms up in the air and covering his mouth before saying something to James, who then partially turned away and raised his hand in contempt, smiling humourlessly.
As Ziyech prepared to take the free-kick, Mason Mount stepped away, but James stood very close to the ball, hands on hips to show his clear frustration. Ziyech then hit the ball into the wall once again.
Pundit Martin Keown, speaking on BT Sport commentary, questioned: 'Where’s the leadership there?'