Woolley is right, I'm often in Freiburg but Frankfurt born and based.
Soyüncü for 35m (Euros, not pounds fwiw) is way too much for him. He's definitely talented more so than Chambers or Holding but that fee is ridiculous, he's worth half that on a good day and that's including the EPL tax. He's good in duels, decent aggression and all-around sound defensively but has many lapses in concentration which are to be expected in that age to be fair. Second season in the German top flight meaning and he's held his own overall but that fee is way too much.
If we're signing defenders from Germany I'd much rather Pavard or Diallo. The former could be available now that Stuttgart have just spent a good chunk of their budget on Maffeo from City, they'll be playing EL qualifiers during the time he'll probably be at the World Cup so Mislintat should move quickly there. Problem is he'll cost probably around 35m - Diallo would be cheaper than that but he's also a little rougher around the edges, Gbamin is another defensive allrounder from Mainz who we should keep tabs on. Generally speaking we should keep our eyes on one of the many French defensive talents coming through at the moment many of which are yet to leave France. Sarr from Nice is the obvious one or Lyons Diakhaby but if I had to pick one it would most likely be Diallo, that aggression is something youre either born with or you're not.