Regarding Halstenberg: i first heard rumors that he might join Hannover 96 a few weeks ago and now it seems to happen. Halstenberg is a current player for the german national team, with a transfer to a club of the second Bundesliga i think he is risking his spot in the national team for the upcoming EURO 2024 which is played in Germany.
As i readed from a few different news pages the transfer from Halstenberg to Hannover 96 is already done and fix.
I dont think that about he is join Hannover into the second league will be have an affect for the National Team.
If he keeps up the performance and playing good i guess he will be playing the EURO 2024 with Germany.