Barcelona denied on Wednesday that they illegally bought a transplant liver for their former defender Eric Abidal.
Contacted by AFP, a Barcelona court said it had investigated a possible crime of organ trafficking for more than a year before deciding not to proceed because of a lack of evidence.
"FC Barcelona roundly deny any irregularity in the matter," the club said in a statement in English on their website.
Abidal, a former France international, received a liver transplant in April 2012 at the Hospital Clinic in Barcelona and resumed his playing career a year later before retiring in 2014.
The Eric Abidal foundation also issued a "categorical denial" of any "irregularities in the treatment of his illness".
On Wednesday morning, online newspaper El Confidencial reported that a telephone tap of former club president Sandro Rosell, suggested that the club illegally acquired a liver for the player.
Rossell is due to face trial on charges of money laundering in connection with Brazilian TV rights sales and was also investigated for the deal which brought Neymar to Barcelona.
Abidal, who is 38, was named Barcelona’s sport director in June.
"The club are saddened by the lack of rigour in the spreading of such information about such a sensitive issue," said the Barcelona statement.
The clinic and the Spanish organ donation organisation (ONT) both issued statements denying any wrong-doing, although ONT added that it had opened an internal investigation.