Joe Hart is not playing for West Ham which means he cannot go to Russia, while Jordan Pickford is conceding goals for fun at Everton. Though Butland is also playing behind a terrible defence for Stoke, he has shown he remains a superb keeper following his recovery from injury this season.
Maguire has caught the eye playing for Leicester this year, and his marauding style will appeal to Southgate. The ability to win possession in defence and drive the team forward into attack makes Maguire a valuable player in a three-at-the-back system.