
The five returned to the BayArena on Sunday morning to complete the performance tests in the Werkstatt that the rest of the squad put behind them on Thursday. "It was good! Everything went perfectly for me," said Kai Havertz. "You keep fit on holiday to make sure you pass the tests." But in the first two weeks after the international fixtures it was a question of putting his feet up – "switching off and doing nothing is also important. But then I started my individual training programme that they gave us to use at home," explained the 20-year-old.
The returnees first completed an individual warm-up routine in the training session before moving on to passing and shooting drills and finally joining the rest of the squad for a practice match. Havertz had a positive impression of the three new signings Kerem Demirbay, Moussa Diaby and Daley Sinkgraven: "We've done very well strengthening the squad and we'll definitely have fun with these players."
At the start of the week, Peter Bosz had 20 pros plus the two U19 players Adrian Stanilewicz and Marcel Lotka at his disposal. Jonathan Tah, Charles Aránguiz and Leon Bailey will join the rest of the squad at the training camp in Zell am See-Kaprun (15 to 21 July). Julian Baumgartlinger is still sidelined. The Austrian injured an ankle in the international break and is currently working on a one-to-one basis in rehab with a physiotherapist in Munich. Baumgartlinger is expected to return to Leverkusen on Wednesday.

Ten years after retiring as a player, Kristina Sundov is returning to the Bayer 04 Women’s team as assistant coach. The 39-year-old former Croatia international takes over from Remzi Kahraman, who has taken up a new challenge abroad. She has been given a contract to 30 June 2028.
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The training pitches at the BayArena are already buzzing with activity again, even before training officially begins next week. On Monday morning, a small group from the Werkself first-team squad completed a session lasting around an hour. Both new and familiar faces were present.
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One ticket, two matches – and a varied programme of events, including appearances by players from the professional teams: Bayer 04 has come up with something very special for the 2026 season launch on Saturday, 8 August. From morning right through to the evening, Werkself fans can use just one ticket to not only enjoy top-class football from the Bayer 04 teams live, but also to experience unforgettable moments with the whole family through a variety of hands-on activities around the BayArena and the Ulrich Haberland Stadium. The day will also end on a real high note: after both matches, Bayer 04 supporters will have the opportunity to interact directly with the players during joint activities and get to know them from a different angle.
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Issa Traoré is moving from Bayer 04 Leverkusen to Slovakian top-flight side AS Trencin. The club has loaned the centre-back out for one year to this year’s ninth-placed team in the Slovakian league.
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