
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.

Márton Szép from the Bayer 04 Leverkusen U19 team is moving back to his home country with immediate effect to join ETO FC, the current leaders of the top flight in Hungary.
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The Werkself host Bayern Munich at the BayArena on matchday 26 in the 2025/26 Bundesliga season. The match is on Saturday, 14 March, with the kick-off at 15:30 CET. Information on ticket sales.
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Werkself TV shows the highlights of Bayer 04's 1-1 draw at Borussia Mönchengladbach on Matchday 21 of the 2025/26 Bundesliga season...
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Bayer 04’s four-game winning run in all competitions came to an end with a 1-1 draw away at Borussia Mönchengladbach on Bundesliga Matchday 21. Yannik Engelhardt scored early for the hosts, but an own goal from Philipp Sander brought the Werkself back level before the break.
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