Maguire is also pleased to see others at Leicester getting recognition, with Demarai Gray and Ben Chilwell receiving their first senior call-ups ahead of Tuesday's friendly against Switzerland.
"I think they're both really top players, top talents," he said. "They've been with the 21s for a long time now, so they know the way that England works.
"I am really pleased. It put a big smile on my face when I saw them both get called up.
"We've got a young squad at Leicester, lots of English players too, so I am looking forward to seeing what comes from them."