The Daily Mail says the attitude of some towards the boss was clear to all during the Champions League defeat to Olympiacos.
Towards the end of that game in Athens, Moyes found himself arguing with the fourth official.
"Send him off," came one voice from among the substitutes. "We would be better off without him."
A clear act of insubordination, it astonished those who heard it - but it was not an isolated incident.
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