He said: “Our magnificent stadium holds more than 76,000 people and 73,000 will be United supporters, so let’s hear from all of you.
“The noise has to be nonstop, a barrage to remind our nearest challengers that Manchester United are back in business.
“If I see anyone with their mouth shut I’ll be sending the ball boys round to kick their shins and wake them up! We must turn our numbers into an extra man.”
