Some of the A-League’s top players will provide the opposition in Saturday’s sold-out friendly at Sydney’s ANZ Stadium, the second game of Tour 2013 presented by Aon.
Defender Michael Beauchamp, who faced United with Aalborg in the Champions League in 2008, said: "It's going to be a great challenge; we're not going out there just to get played off the park.
"I'm sure nothing's going to be left on the field because the opportunity to play United doesn’t come around every day and for some people it might be the only opportunity they get. You just have to go out there and grab it with both hands."
Captain and former Blackburn midfielder Brett Emerton added: "We have a squad full of talented players. We're coming up against a very good team so it's going to be a great test for us, but we're all looking forward to it.
"We're going to play in front of 83,000 people at a fantastic stadium, so what's not to look forward to?"
Ange Postecoglou, who coached South Melbourne against United in the Club World Championship in Brazil in 2000, praised the Reds’ ability to remain at the top of the tree for so long.
"It's been quite incredible and I don't know whether we'll ever see the likes of it again," he said. "The other football clubs around the world on the same level have had their ups and downs, but United just keep getting bigger and bigger.
"I coached against them in 2000 and I thought they were massive then. If anything, in the last 13 years, they've become a bigger club on and off the