Bayer Leverkusen midfielder Hakan Calhanoglu penalised over contract dispute

CAS upheld a ban originally imposed by FIFA after ruling that Calhanoglu breached a contract he signed with Trabzonspor in 2011. The Turkey international never joined the club but instead extended his deal with Karlsruhe, where he was a youth player at the time.

"Hakan Calhanoglu is ordered to pay EUR 100,000 to Trabzonspor FC," a CAS statement said. "Furthermore, the four-month ban imposed on Hakan Calhanoglu by the FIFA Dispute Resolution Committee (FIFA DRC), which was suspended at the beginning of the CAS proceedings, is reinstated with immediate effect."

The ban will rule Calhanoglu out of the rest of Bayer's Bundesliga campaign, as well as their Champions League tie against Atletico Madrid. He will also miss Turkey's World Cup qualifier against Finland on March 24.

Bayer sporting director Rudi Voller said: "Of course, we regret this decision which is completely incomprehensible for us. 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."

Trabzonspor lodged a complaint over the issue in 2013, the same year that Calhanoglu joined Hamburg. He signed for Leverkusen in 2014 for a fee of 14.5million euros.