Head coach Gareth Southgate has raised eyebrows by leaving out Manchester City star Jack Grealish.
The 28-year-old had a poor season and was on the fringes of the squad, but had joined up with the 33-man group.
He has been left out of the 26-man final squad, despite being a Southgate favorite in the past.
Per The Telegraph, an unnamed sporting director stated: "How can the England manager leave out a player who can make such a big difference from the bench? Crazy."
Southgate stated on Thursday of his decision: "All the players took the decisions respectfully and all the players believe they should be in, that's why they're all top players with that mindset.
"We have some players that have performed extremely well this season and other players have had stronger seasons. In the attacking positions we're blessed with a lot of options and Madders and Jack give us something different.
"They were tough calls, but we back our decisions but recognise we could've gone a different route. It was sad to have to deliver that news to them."