Klostermann is a German professional football player who currently plays as a right-back for Bundesliga club RB Leipzig. He was born on June 27, 1995 in Wiesbaden, Germany and started his career with local club SC Wehen Wiesbaden before moving to the Netherlands where he played for ADO Den Haag.

In 2016, Klostermann signed with RB Leipzig, where he has since made over 200 appearances for the club. He has been a key player for the team and has helped them achieve success both domestically and internationally.

Klostermann is known for his defensive abilities and aerial ability, which have earned him praise from fans and critics alike. He has also been praised for his work rate and willingness to push forward defensively, which has helped to create space for other players to attack.

Off the pitch, Klostermann is a quiet and reserved individual who values his privacy. However, he is passionate about his sport and takes it very seriously. He is respected by his teammates and coaches and is considered one of the best right-backs in the world.

Overall, Klostermann's contribution to RB Leipzig and the Bundesliga cannot be overstated. His skill, experience, and leadership qualities make him a valuable asset to the team and a fan favorite.