The 23 year-old, who will wear the number 33 shirt, joins the Terriers for the rest of the 2017/18 Premier League campaign, with Town having the option to buy the player at the conclusion of the season.
Terriers boss David Wagner commented: “It was important in this window that we found a real competitor for the right back position and in Florent, we have exactly the right player.
“Florent is one of the most exciting young right backs in Germany and is a footballer who I believe will fit our system and style of play very well. He is a real Terrier in defence and likes to attack whenever possible, which is perfect for how we want to play.
“I have met with him and he is a good character; he is eager to show he can play in the Premier League despite a lot of interest from some top clubs in Germany. I'm looking forward to working with him on the training pitch."