Bayern Munich winger Kingsley Coman was taken into custody on Monday and questioned over allegations of domestic violence, reports said.
Mainz have signed Romania international Alexandru Maxim from Bundesliga new boys Stuttgart on a four-year deal.
Starke, 36, retired at the end of the season after winning 13 trophies with the Bundesliga champions.
"It's very difficult to play against him. He likes to score and even if there isn't really a chance he scores," said Henrichs about Hernandez.
RB Leipzig's Naby Keita has an €80m price tag and is wanted by Liverpool. Here's what you need to know about the exciting box-to-box midfielder.
Werder Bremen have agreed a deal to sign Slavia Prague goalkeeper Jiri Pavlenka, the Bundesliga side have announced.