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Athletic Bilbao defender Yeray Alvarez has been provisionally suspended after testing positive for a banned substance found in his alopecia medication. The 30-year-old Spaniard, who has made 257 appearances for the La Liga club, failed a doping test following Bilbao's 3-0 defeat by Manchester United in the Europa League semi-finals on May 1st.

Alvarez, who was diagnosed with testicular cancer in 2016, stated that he had been using the medication as part of his ongoing treatment for hair loss. In a social media post, he expressed his shock and disappointment, saying, "I couldn't believe it when I was informed of the test result. It's a very hard blow to take."

He further explained, "After studying the case, we have established that I tested positive because I unintentionally took a hair loss prevention medicine containing a banned substance. The disciplinary procedure is currently under investigation and subject to confidentiality, so I am provisionally suspended and am not authorised to make any further public statements."

Alvarez also expressed his regret over the situation but remains hopeful for a swift resolution, adding, "I very much regret this situation but, with the support of the club, I am working on my defence in the belief that I will be able to return to the field of play as soon as possible."

UEFA has refrained from commenting on the case until a final disciplinary decision is made. Meanwhile, Athletic Bilbao has issued a statement expressing their full support for Alvarez and their confidence in the bodies responsible for resolving the case. The club stated, "Athletic Club wishes to express its full support for Yeray Alvarez at this time and its complete confidence in the bodies charged with resolving the case. Once the proceedings are concluded, Yeray Alvarez and Athletic Club will offer all the pertinent and necessary explanations."

This incident has sparked discussions about the challenges athletes face when managing medical conditions while adhering to strict anti-doping regulations. Alvarez's case highlights the need for clear communication between athletes, medical professionals, and governing bodies to prevent such unintentional violations.