
The background to the ban is a dispute between Hakan Calhanoglu and the Turkish club Trabzonspor. During his time at Karlsruhe SC in 2011 Calhanoglu, as a minor, reached agreement with Trabzonspor regarding a transfer. However, he extended his contract at Karlsruhe SC and later joined Hamburg SV. The CAS agreed with FIFA that the actions of the player represented a breach of contract with Trabzonspor.
Bayer 04 Leverkusen were not involved in the proceedings as the player signed for the Bayer 04 Leverkusen several years after the incident. "Of course, we regret this decision which is completely incomprehensible for us," said sporting director Rudi Völler. "It's a heavy blow for Hakan but also for us. We’re also being heavily punished although Bayer 04 Leverkusen had nothing to do with the events in 2011. We are now missing a very important player in a crucial phase of the season."
Bayer 04 CEO Michael Schade also criticised the verdict. "In addition to the player, it also affects the club that played absolutely no part in the events of the time. Unfortunately we are left with no alternative but to accept the decision," said Schade.


It was a perfect start for Bayer 04: in Carles Martínez's first competitive match as Leverkusen head coach, Patrik Schick broke SV Wehen Wiesbaden's resistance shortly before half-time. The Black-and-Reds pulled clear in the second half, winning by a final score of 4-0. There was also good news on the personnel front. The Werkself Review of the 2026/27 DFB Pokal first-round clash.
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After the 4-0 win at SV Wehen Wiesbaden in the first round of the DFB Pokal, goalscorers Lucas Vázquez and Nathan Tella spoke to Werkself-TV...
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Werkself-TV shows the highlights of Bayer 04's 4-0 win at Wehen Wiesbaden in the first round of the DFB-Pokal 2026/27...
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Bayer 04 have comfortably reached the DFB Pokal second round thanks to a 4–0 victory away to Liga 3 side SV Wehen Wiesbaden. Patrik Schick put the Werkself ahead in the first 45 in the first competitive match under head coach Carles Martínez with debuts for new signings Miguel Gutiérrez, Afonso Moreira and Facundo Medina. After the break, Lucas Vázquez (47'), Nathan Tella (69') and Christian Kofane (79') also found the back of the net.
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