Gary Neville and Micah Richards were embroiled in a heated exchange in the aftermath of Manchester United's humiliating defeat by local rivals Manchester City.
Pep Guardiola's side put four past United at the Etihad with Jadon Sancho's equaliser failing to spark the momentum the away faithful were hoping for.
A brace each from Kevin De Bruyne and Riyad Mahrez further damaged United's hopes of Champions League qualification for next season.