Salif Sane says he shunned interest from the Premier League before agreeing a deal with Hannover.
The 22-year-old defender has agreed a four-year deal with the Bundesliga side and will arrive from French side Nancy.
Fulham and Swansea had been linked with Sane, but he says the clubs from the Premier League did not move quickly enough.
"I am delighted to put pen on paper with Hannover, they showed me they are interested in me and I am very happy to sign for four years here," he said. "There were teams in the Premier League interested in me but they were not willing to move as fast as them, so for me it was easy to make the choice to come to Germany."