
The 18-year-old has worn the Black and Red shirt since 2013 and he has made 16 appearances for the Bayer 04 U19s in the current U19 Bundesliga West campaign. He has also been very much in demand with the Germany youth teams. Boller (pictured above in the middle with Lucas Alario and Sam Schreck in the game at Heidenheim) has earned 15 caps for the Germany U17 team and he was a first choice in central defence at the 2017 European Championships in Croatia as well as the World Cup in the same year in India. He played alongside Kai Havertz in the Bayer 04 U17s in 2016 when they won the Germany U17 championships with a 2-0 victory over Borussia Dortmund in the final.

Werkself-TV shows the highlights of Bayer 04 Women's 2-0 win against Hamburger SV on Matchday 9 of the 2026/27 Google Pixel Women's Bundesliga.
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1. FC Köln host Bayer 04 on Sunday 8 November (kick-off 15:30 CET) in the 75th Bundesliga derby between the Rhineland neighbours. The lowdown on our next opponents.
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The Werkself have the chance to end an intense run of fixtures with a derby victory as they visit Köln on Sunday ahead of the international break. Head coach Carles Martínez spoke on Friday at his press conference about the attributes his team needs and the support of the fans.
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After back-to-back away defeats, Bayer 04 Women now face their penultimate home fixture of 2026 as they welcome Hamburg to the Ulrich-Haberland-Stadion on Saturday (14:00 CET) seeking three important points in the Google Pixel Bundesliga.
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