PJ87
Journeyman Pro
What are you going on about? The last player to walk out on England was Chris Sutton and he is still living it down 25 years later. You say he's not arrogant so I'm sure he's not going to turn his back on the England team for not picking him when he's still only 21, as that would be about the most arrogant thing he could possibly do.
Personally I would have him in the squad as an attacking option against the poorer teams, then maybe put someone more defensive-minded in against the top teams. But if Southgate leaves him out, it's not the end by any stretch, he will keep learning the defensive side of the game and I'm sure it won't be too long before he nails down that starting spot.
Some people just need to stick to hockey ?