
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.

Bayer 04 remain unbeaten in the 2026/27 UEFA Europa League. After winning the opener against NK Celje, the Werkself followed that up on Thursday night with a 4–0 win away at the Polish champions Lech Poznan. Patrik Schick, who came on as a substitute early in the game, scored twice from the penalty spot, and Malik Tillman also found the back of the net before half-time. The second half was a more subdued affair, with Ibrahim Maza scoring late on to seal the final 4-0 scoreline.
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Since 2023, Bayer 04 has been organising regular free goalkeeping coach training sessions at the BayArena. As in previous years, the event attracted enormous interest in mid-October 2026. Around 140 participants – mostly goalkeeping coaches from the region, but also team and academy coaches as well as association staff – came to the Werkself stadium to gain expert knowledge on the subject of zonal marking. Through a theoretical keynote presentation and a practical session on the pitch, the participants gained insights into goalkeeping and goalkeeper training at Bayer 04.
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A first for the Werkself: Today, Thursday 15 October (kick-off: 18:45 CEST), Bayer 04 face Lech Poznan for the first time on matchday 2 in the UEFA Europa League group. Although the Black and Reds have a flawless record against the only Polish opposition faced before, they must not underestimate the attacking ability and goal-scoring threat of the reigning champions from Poznan. Lech’s squad also includes two former Bundesliga players. Today's matchday news.
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Some 30 years on since their last European fixture in Poland, Bayer 04 cross the border for Thursday’s UEFA Europa League clash against Lech Poznan on Matchday 2 of the league phase on Thursday (kick-off: 18:45 CEST). Ahead of a first-ever meeting with Lech, head coach Carles Martínez and winger Nathan Tella spoke in Poznan about special memories and objectives.
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