The 20-year-old takes on one of the finest midfield units in the world when he lines up against Manchester United and the likes of Roy Keane, David Beckham, Ryan Giggs and Paul Scholes.
If he holds onto his place it will only be King’s third start of the season and his fifth in total but he’s relishing the prospect.
He said: "That will be a tough one but it’s a challenge I’ll relish. It will be the toughest challenge I’ve had. Roy Keane is as tough as it gets, in the Premiership at least.
"They are all different types of players in the midfield and they all gel together brilliantly. I would say they are one of the best midfield units in Europe. It’s going to be tough but we’re coming off the back of two great home wins and we’re looking forward to it."
King had a taste of the Old Trafford experience as a substitute last season. "It was frightening to be fair, playing in front of 67,000, I was really nervous but hopefully this time I’ll be fortunate enough to start," he added. "We’re high on confidence and if we could get our first away win this would a nice play to go and do it."
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Ledley King is preparing for the toughest test of his professional career.