Barcelona defender Eric Abidal faces surgery on Friday after it was discovered he has a liver tumour.
Abidal's condition was revealed in a Twitter statement by his club.
Barcelona announced: "A liver tumour has been detected in the player Eric Abidal and he will be treated surgically next Friday.
"Abidal will be operated on by Dr Josep Fuster Obregon. Per the express wish of the player, we call for the utmost respect for the right to privacy."