Milan B/U23

[Sampinjon]

Depends on rules. Most leagues allow moving players only between seasons. There is some window at the beginning of the season where you need to decide which players will play for A and B team. Some other leagues have limited number of players (3 at most) who can play for both, A & B teams during season.
We will see how it will go here.

"So i get that if this team gets promoted to Serie B, they then can't be promoted to Serie A."


They can if A team gets relegated