Maguire has won 64 caps for England and is his country's highest all-time scoring defender, with seven goals.
Despite missing Euro 2024 through injury, Harry has been one of the Three Lions' most reliable tournament performers over the last decade, making his international breakthrough at the 2018 World Cup and being named in the Team of the Tournament after Euro 2020.
Mainoo, meanwhile, burst on to the scene at the European Championship in Germany, starting each of the four knockout games, including the final, after only winning his first cap earlier in 2024.