The following year, he was promoted to the first team, but never made an appearance, continuing to play regularly for the reserves over the next three seasons.

[2] In June 2021, Hansa Rostock announced the signing of Behrens on a free transfer for the 2021–22 season.

[3] In early July 2022, Indonesian top flight league club Persija announced the signing of Behrens for 2022–23 season.

[5] Later that month, he scored his first goal after receiving a through pass from Syahrian Abimanyu in the 15th minute, in a 2–1 winning match against Persis at Patriot Candrabhaga Stadium.

This biographical article related to association football in Germany, about a midfielder born in the 1990s, is a stub.