
He will undergo further treatment at Bayer 04. A replacement has yet to be called up.
Germany U21 coach Stefan Kuntz said: "It's a purely precautionary measure. In discussion with Jona, our doctors and Bayer Leverkusen we have reached the decision to send the player home for treatment. Of course, it's a pity one of our leading players misses out on the start of the European Championship qualifiers but we do have options in central defence in our squad."

The Bayer 04 Women clcoked up a 3-2 win in a friendly against Twente Enschede on Thursday afternoon in the last international break of 2025. In drizzle, Lilla Turanyi (16’), Kristin Kögel (65’) and Paulina Bartz (69’) scored the goals for the Werkself against the Dutch Eredivisie Vrouwen leaders, who are still unbeaten in the league.
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The annual Black and Red Week is up and running. Day three, Thursday 27 November, includes non-kit supplier merchandise...
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Werkself TV shows highlights of the 2-0 win for Bayer 04 at Manchester City on matchday 5 in the UEFA Champions League 2025/26 league phase...
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The annual Black and Red Week is up and running. And day two, Wednesday 26 November, includes a coupon flyer with big discounts...
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