Athletic Bilbao defender Yeray Alvarez has been issued a 10-month UEFA doping ban.
The 30-year-old failed an anti-doping check after a Europa League match against Manchester United in May.
The La Liga side faced United in the semi-final of the competition after beating Rangers in the quarter-final stage. Alvarez played in both matches against Rangers.
After the first-leg against the Premier League giants, the presence of Canrenone was found in Alvarez's sample.
The defender was banned for 10 months as a result of the banned substance being reported following lab analysis.
Alvarez accepted the banning order and explained he did not intentionally break rules; rather that the substance was found in an anti-hair loss treatment he had been using.
The player had been using the medicine after being diagnosed with testicular cancer in 2016. UEFA ruled the breach as a "non-intentional anti-doping rule violation".
He will be allowed to return to action on April 2, with a return to training two months earlier.
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A UEFA statement confirmed: "On 1 May 2025, Athletic Club player Yeray Álvarez underwent an in-competition doping control carried out by UEFA following a UEFA Europa League match.
"The analysis of the player’s sample by a WADA-accredited laboratory revealed the presence of Canrenone, which is a substance prohibited in- and out- of competition under the category S5. Diuretics and Masking Agents of the 2025 WADA Prohibited List.
"On 2 June 2025, the player accepted a voluntary provisional suspension having effect from that date.
"Following the opening of disciplinary proceedings against the player on 10 June 2025, two UEFA Ethics and Disciplinary Inspectors conducted an investigation and the case was submitted to the UEFA disciplinary bodies for decision.
"At its meeting on 19 August 2025, the relevant UEFA disciplinary body decided to suspend the player for ten (10) months, starting from the date of the provisional suspension (i.e. 2 June 2025) and ending on 2 April 2026, for committing a non-intentional anti-doping rule violation.
"In accordance with Article 10.14.2 of the UEFA Anti-Doping Regulations, the player may return to train with a team or use the facilities of a club in the last two months of his period of ineligibility, i.e. as of 2 February 2026."
