Former Manchester United captains Roy Keane and Gary Neville were drawn into a heated argument over the full-backs' positions in possession following the heavy 3-0 loss to Liverpool.
Both Keane and Neville watched on in anguish as United were torn to bits by their opponents in the first half at Old Trafford.
Casemiro was at fault for both goals in the opening 45 minutes, as he first gave the ball away easily and then was dispossessed for Luis Diaz's brace.
Mohamed Salah added a third ten minutes after the restart, which ended the game as a contest and led to a mass inquest at full-time on the Sky Sports panel.
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