England Under-21s manager Aidy Boothroyd believes Chelsea winger Callum Hudson-Odoi is unlucky to remain with his side.
Hudson-Odoi has been in good form with Chelsea under Thomas Tuchel in recent weeks, having played 11 of the last 12 matches for the Blues.
But it hasn't been enough for the 20-year-old to make Gareth Southgate's Three Lions squad.
He will now play for the U21s in next week's U21 European Championship group stage.
"I think so (that he is unlucky)," Boothroyd told reporters.
"Not only that, but one or two players on our standby list for this particular squad can consider themselves unlucky.
"That's good for me because the quality of the players is so high. But that's all part of sport and life. You get an opportunity; you take it, things don't work out, you come back down, you've got to get back on your bike and go again.
"Callum has certainly done that; we're expecting Mason [Greenwood] to do that and anybody else who goes up to the senior team and comes back to us.
"There's an expectation from us that is exactly the same as the senior team and all the pathways. We want you to be the best you can be and dealing with disappointment is part of that.
"There are ups and downs for these young guys and that is part of what we do, to offer them an environment where they can relax a little bit and show what they've got.
"But if they're not with us in terms of how we want to do that and what's expected, then they don't last very long. But those that do tend to get back into the seniors and do very well."
