For Laudrup it was a chastening experience, with the only consolation being a goal on his debut for record signing Wilfried Bony.
"Our plan was to put Manchester United under pressure," said Laudrup.
"It succeeded quite well until the 33rd minute. Van Persie didn't touch so many things and suddenly you saw the difference.
"To concede two in two minutes against Manchester United is too much. Once he got the third we knew it was game over.
"They got a lot of confidence. Once a team like Manchester United gets more confidence they can play the ball around like that."
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