Maguire is thought to be United's number one transfer target as they look to sign a central defender ahead of today's transfer deadline.
United are said to be considering revisiting their interest in the 25-year-old when the winter window opens in early 2019, but Chilwell has insisted that Maguire will remain at Leicester for the entirety of the 2018-19 campaign.
The Foxes duo returned to Belvoir Drive this week after impressing for England as Gareth Southgate's Three Lions reached the last-four of the FIFA World Cup for the first time since 1990.
Jose Mourinho says Paul Pogba was the penalty-kick taker of choice for Manchester United after Pogba converted in their win over Leicester City.
"We showed good control, good football, a lot of chances".
"We lost Riyad (Mahrez) he was a valuable player for us but was important to keep all our best players and have good additions for the squad".
When that was put to Puel, he said: 'We will see what happens in his future but I am happy to keep Harry and happy with his attitude.
Oh dear Jose, at least you can get your smile back tomorrow against Leicester. But it is looking good this season.
"It is very good to have Harry back", Leicester left-back Chilwell told reporters after he and Maguire played in Leicester's 2-1 Premier League defeat at Old Trafford on Friday.
"We know a friendly game is always different".
The Premier League transfer window may now be closed, but that's not the case in Spain.
"It was incredible to see some young players from the Academy play some friendly games without the global players, it's a good feeling for the future of the Club".