The Belgium striker ended up going to Everton on loan and he will take on Laudrup's men on Sunday.
Laudrup said: "We asked about him. I didn't call again because Chelsea said they wanted to keep him, but maybe I should have called again.
"He is a real talent. He is fast, can use both feet, he is strong, he is good in the air and is good on the counter-attack.
"He has been a huge signing for them."
Laudrup is a big fan of Everton midfielder Ross Barkley and believes the midfielder can become a major star.
The 20-year-old was first blooded by David Moyes, but Everton boss Roberto Martinez has given the youngster the authority to run the team's attacking play and has been rewarded with a string of excellent displays which have thrust him into contention for a World Cup place.
Laudrup says patience will be vital with Barkley.
"You have to take it easy," he said. "I really like him but young players need to be given time. Do not rush it after 10 or 15 games and say they are a new superstar in world football. Let them grow.
"He has potential like Jack Wilshere at Arsenal. He is really something special but you have to give them two or maybe three years to maintain a certain level.
"They are young players who will have ups and downs and if you push them too hard then you put a lot of pressure on their shoulders and it is difficult."