According to what I've been reading, after Nuri Sahin's dismissal for not meeting expectations, Dortmund had Erik ten Hag as a favorite, who comes from a complicated tenure with the English team Manchester United. However, there was a change of interest, and they turned their sights to Niko Kovac to lead Borussia Dortmund, as it's a new beginning and aligns with the ambitions of this candidate. Therefore, there are good omens from the fans because he could bring the necessary change to recover the club's prestige. The financial demands of Kovac are not clear, but it seems to be within Dortmund's budget.
Compared to Erik Ten Hag, I think for some reason I prefer Niko Kovac because I think he has quite good experience in the Bundesliga and maybe he is suitable to coach a big club like Dortmund, previously he was the coach of Bayern Munich and won the Bundesliga title and the DFB Cup in the 2018-19 season and also became the coach of Eintracht Frankfurt winning the DFB Cup title and the Runner-up position in the Bundesliga so if he coaches Dortmund, it is possible that he can improve the performance of this club which is currently slumping.
Ten Hag is indeed quite good, it's just that he chose Man United, where Man United itself is under great pressure not because of its coach but because the club is having problems, behind all that Ten Hag is good enough to be Dortmund's coach considering his performance in bringing Ajax is very impressive and Ten Hag is also very smart in developing young players, especially now Dortmund has good young talents, with the arrival of Ten Hag they can work together well because I know Dortmund is very good at investing in players, they develop young players then sell them and if Ten Hag is there then that is a good result.
And Ten Hag is also very suitable in Germany, he Ten Hag had coached Munich at that time and of course he already understands the situation in Germany very well and in my opinion Ten Hag is more suitable to work with Dortmund considering what he gave at Ajax, of course that was a consideration and at that time I thought Ten Hag deserved to be praised for his achievements.