Midfielder Paul Seguin will leave Greuther Fürth on a free transfer when his contract expires at the end of the season and join Union Berlin, the Bundesliga bottom club said Tuesday. “I had the best time of my career here,” the 26-year-old Seguin told the team homepage. “It’s not in question for me that I will give everything for our team for the rest of the season to end the season as well as possible.” Fürth are nine points behind the potential safety of the play-off place with nine games remaining and host Leipzig on Sunday.