All three received an official farewell at the last home game of the season against Schalke 04. The two managing directors Fernando Carro and Rudi Völler thanked the trio for their commitment to Bayer 04.
Jonas Boldt worked for the Werkself for a total of 15 years. It began in 2003 with a placement; in 2007 the man from Nuremberg joined the scouting department. As a scout, head scout, sporting manager and finally sporting director – the 37-year-old has played a significant part in all the transfers in recent years thus making a contribution to the success of the Werkself. At the end of November last year, Jonas Boldt decided to leave his post as sporting director and the club at the end of the season.
While Boldt leaves Bayer 04 after a long stay, Isaac Kiese Thelin and Thorsten Kirschbaum only moved to Leverkusen in the summer of 2018. Kiese Thelin joined the Werkself from Anderlecht on a season-long loan. Last term the Sweden striker made 14 appearances in all competitions and scored one goal.
Goalkeeper Thorsten Kirschbaum also leaves the club after one season. The 32-year-old was the third choice shot-stopper in this campaign behind Lukas Hradecky and Ramazan Özcan. In the middle of December the number 24 made his competitive debut for the Black and Reds in the 5-1 win at AEK Larnaca in the Europa League – it was also Kirschbaum’s first game in a European cup competition.
Bayer 04 Leverkusen have appointed Carles Martínez Novell as the new head coach. The 42-year-old Spaniard worked for FC Toulouse in the French Ligue 1 until the end of the season. Martínez finished last term in ninth place with the club from the south of France. He will take over the Werkself on 1 July 2026 and has signed a contract to 30 June 2028. Martínez, whose contract with Toulouse expires at the end of the month, succeeds Kasper Hjulmand at Leverkusen, who is leaving the club after one season.
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Welcome to Leverkusen, Carles Martínez Novell. Bayer 04 have appointed the 42-year-old Spaniard as the new head coach on a contract to 2028. Martínez most recently worked for FC Toulouse in the French Ligue 1 until the end of the season. He previously spent four years at Barcelona's legendary academy La Masia in his home city. Bayer04.de introduces Martínez in more detail.
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Bayer 04 plans for the 2026/27 pre-season continue to take shape. The Werkself will kick off the new season in mid-July with the return to the training ground. The highlight will be the official season opener on 8 August at the BayArena, including a friendly against La Liga club Sevilla. Friendlies in Germany will take the team to neighbouring Monheim, Offenbach and Jena.
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Strengthening the Bayer 04 Leverkusen youth teams: Konstantinos Kotsifakis will join the Werkself from Bundesliga 2 club Hertha Berlin for the 2026/27 season, where he will be a permanent member of the Leverkusen U19 coaching set-up. The German-Greek will also take on an operational role in coaching the Bayer 04 Future Team. The 29-year-old was most recently head coach of the U17s at Hertha Berlin.
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Another award for the Bayer 04 head groundsman and staff: After coming top in the 2021/22, 2022/23 and 2024/25 seasons, the BayArena pitch came second in the Bundesliga Pitch of the Year ranking for the 2025/26 season. VfL Wolfsburg secured the top spot this year, with TSG Hoffenheim in third place.
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