That is the opinion of Leicester star Kasper Schmeichel, who is pleased that Maguire has signed a new deal.
Maguire destroyed all speculations about his future at the weekend when he put a new five-year contract on paper to keep him in the King Power Stadium until 2023.
The English defender was ruthlessly haunted by United during the summer window by Jose Mourinho, but he was informed by the Foxes that the player was not allowed to leave.
Reports have suggested that Maguire's new deal will see his wages rise from about £ 45,000 per week to £ 80,000 per week.
And Schmeichel believes that the contract extension of Maguire proves that Leicester is not a sales club.
He said: "It is very nice news.
"Harry has been a top class since the first day, and a big sign for him to spend five years.
"It is a declaration of intent from the owners, they want to keep the best players, we are not in a position where we have to sell.
"We want to build and Harry is an important part of that.
"You can always improve, there is no doubt about that." For Harry himself he was last season's player of the season and this season he continued his World Cup form.
"He is a top level player and we are very lucky to have him."
The deal will almost not make Mourinho's hope to sign up for Maguire shortly.
After making a new agreement, Maguire said: "Since I came to this club, I have always repeated how good they have been to me.
"They gave me the opportunity to play in the Premier League and built a great platform for me to perform in the World Cup, so I thank them a lot.
"I owe them a lot and I look forward to the future."