Barcelona boss Tito Vilanova has fallen ill again, according to reports in the Spanish and Catalan press.
The manager had an operation to remove a cancerous tumour 12 months ago, but reports suggest that he has suffered a relapse. Barca have cancelled all of their activities for the day, with Sandro Rosell previously scheduled to have a press conference.
The club posted a statement on their website saying: "FC Barcelona states that the press conference of president Sandro Rosell, scheduled for midday today, has been cancelled. The Christmas dinner which was to be held with the media has also been cancelled.
"Later today the club will release a new statement. Until then there will be no further statement on the matter. We regret any discomfort caused by this decision."
There are suggestions that Vilanova will have to step down for the rest of the season and that Barcelona will have to appoint a temporary replacement, although these are unconfirmed.