Tough to figure out squad size without knowing who is going.
If nobody leaves and we add the plausible candidates:
Savio, Couto and Kimmich.
Then I think the midfield and defense has good depth, but the forward attacking line is stacked:
Haaland
Alvarez
KdB
Foden
Doku
Grealish
Nunes
Bernie
Bobb (he is part of the squad now)
Thats 9 players for 4 attacking spots. We are already stacked there, we wont have 10 in 4.
And I like Savio, but I think Bernie has to leave to make space for him.
No chance for McAtee on top of that, unless McAtee is chosen over Savio.