The assembled Man United and Premier League legends, with their vast football IQ and experience, reached a damning verdict after watching the derby defeat on Sunday.
Wayne Rooney was joined in South Korea by fellow United alumni Rio Ferdinand, Nemanja Vidic, Bastian Schweinsteiger and Michael Carrick.
The group were in Asia to play in a legends match and appeared to be in a hotel suite together for the game during down time after the exhibition.
They were also joined by former Arsenal legends Robert Pires and Gilberto Silva, along with Ashley Cole and former Brazil star, Maicon.