Kacper Potulski is being increasingly pursued by Borussia Dortmund. According to magazin.comunio.de, Potulski could replace Nico Schlotterbeck at Borussia Dortmund in the event that Schlotterbeck departs from the club. Previously, Potulski's name has also been mentioned in connection with Bayern Munich, Inter Milan, and Chelsea.

Mainz centre-back Kacper Potulski is a primary target for Borussia Dortmund. The process to sign the Polish youth international has started, and staying in the Bundesliga is a more realistic scenario than a previously discussed move to the Premier League. Dortmund faces competition from Bayer Leverkusen, while Bayern Munich, VfB Stuttgart, and Hoffenheim are also monitoring the situation. According to unofficial reports, the transfer fee could be between 15 and 25 million euros.