Title-chasing United arrive at the Lane with the added boost of rivals Arsenal dropping points at Bolton yesterday.
But Glenn is concentrating on our game. "Playing at six or seven out of 10 isn't enough against United - it has to be an eight, nine or 10 out of 10," insisted the boss. "Everyone has to be functioning.
"You have to remember that United have just beaten, in my opinion, the best team in the world in Real Madrid. That underlines the task ahead. That was a wonderful game of football and to be fair to United, they nearly turned it around.
"We know we've got to perform to a very high standard to get the right result and we're focusing on our own performance.
"I'm sure the crowd will be right behind us and our players have to rise to the occasion. We've got to do our business.
"We're trying to get three wins and see where that takes us."
Glenn Hoddle knows we have to be at our best to take anything off Manchester United in this afternoon's Premiership encounter.