Pickford
Alexander-Arnold - Maguire - Stones - Chilwell*
Rice
Bellingham - Foden
Saka - Kane - Maddison
That LW position is tricky because while Foden could play there, it's not where he is strongest. It's lacking defensively, but you could use Alexander-Arnold as the inverted full-back to add an extra body in midfield?
Shaw would start at LB for now but I think he's injured so there's doubts about if he'll play, otherwise it's Chilwell's spot to lose.
Right now, there's 4 players that go straight in and just have to be immediately on the team-sheet - Foden, Saka, Kane & Bellingham. They're world-class.
I know some (and hopefully not Southgate) will include Phillips or Henderson, but there's better players available now to start...
The good thing is though, there's depth in a lot of positions, and hopefully those players could just slot right in - Walker/Trippier for RB; Gallagher in CM, Palmer or Bowen in attacking midfield, Grealish (if he gets his act together) on LW, Watkins is playing very well to be an adequate replacement for Kane. Even players like Colwill or Guehi (if fit) can be options for CB.