
The 23-year-old joined the Werkself in 2014 and he made 215 appearances for Bayer 04. "Julian joined us as a 17-year-old at a time when he was sought after by a lot of clubs but he opted to play for us and he has developed wonderfully since then making his international debut during his time in Leverkusen," said sporting managing director Rudi Völler. "With him, our approach of bringing through young, highly talented players early at a top level, achieving a lot with them and thereby significantly increasing their transfer value worked out too. We would have liked to have held onto him a bit longer," declared Völler, "but with the signing of Kerem Demirbay from Hoffenheim we have already found a suitable replacement."
Bayer 04 sporting director Simon Rolfes said, "Over the past few months, Julian has matured into a top player in a different position under coach Peter Bosz. Now he has decided to play somewhere else after five and a half years. We have already reacted to that in terms of personnel," said Rolfes. "And we will continue to strengthen our squad to maintain our competitiveness next season."

Several Werkself players are set to represent their national teams during the final international break of 2026. Here’s an overview of who has been called up and what matches they will face in November. This article will be updated regularly.
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After three consecutive wins in the Europa League, the Werkself suffered their first European defeat of the season against Marseille. In a first half with few chances, the Black and Reds gradually gained more and more control of the game, but were unable to convert that advantage into goals. Miguel Gutiérrez came closest to putting Leverkusen ahead with a shot that hit the crossbar. In the second half, the French side produced clinical finishing, with Amine Gouiri scoring from a counter-attack to make it 1-0 (77’). Right up to the final whistle, the Werkself threw everything forward in search of an equaliser, but were unable to find a way back into the game.
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Bayer 04 are riding a wave of success on the European stage: After three wins from their first three games and as the only team yet to concede a goal, the Werkself sit second in the table in the group stage of the UEFA Europa League. With another three points in their first-ever competitive match against Olympique Marseille on Thursday night, 5 November (kick-off: 21:00 CET), Bayer 04 could leap to the top of the table. Meanwhile, the French side are riding the wave of a winning streak in Ligue 1, but are yet to pick up any points in the Europa League. For one Werkself player, Thursday night will mark a reunion with his former team-mates. Today’s matchday news.
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The Europa League campaign continues: Bayer 04 host Olympique Marseille at the BayArena on matchday four of the group stage on Thursday 5 November (kick-off: 21:00 CET). Ahead of the clash against the club from the French Mediterranean coast, head coach Carles Martínez spoke about the visitors’ form and had some good news regarding the squad. Former OM player Facundo Medina spoke, amongst other things, about the factors that will be crucial against his old club.
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