United made Maguire the world's most expensive defender when they paid the Foxes £80m for his signature.
And Maguire says the deal was good for both parties.
"[The fee] doesn't bother me at all," Maguire told Inside United.
"It's something that I can't affect. Leicester wanted to keep me and they are in a great position as a club.
"Manchester United wanted to buy me and they came to an agreement. It's probably a good deal for both parties and it's something now where I want to concentrate on my football."