According to Transfermarkt.de, German centre-back Niklas Stark (23), playing for Hertha Berlin since 2015/16, has been targeted by Borussia Monchengladbach. Former Nürnberg and U21 player is currently on a deal with Die Alte Dame until June 2022, and might be signed over on an about 16 million euros transfer fee.
Source: transfermarketweb.com