The Catalan supremo has informed fans that they should wrap up warm for the Primera Division fixture against the Basque club due to the cold weather
The Catalan club are bracing themselves for one of the coldest game in their history, with forecasts predicting temperatures of minus four degrees Celsius when the fixture is due to kick off at 22.00CET.
With the cold wave sweeping through Europe and already affecting several fixtures in Italy, Rosell has told fans to wrap up warm on Saturday night.
"Everyone who is going to Camp Nou, we encourage to go there with a blanket," Rosell said during a press conference to announce a collaboration between the club and the Red Cross charity.
Barca coach Pep Guardiola echoed Rosell's sentiments in his pre-match press conference for the game, stating: "If they come, they should bring a coat. I hope they attend, but I understand [if they don't], the forecast says it will be very cold."
Barcelona are confident the game will go ahead despite the poor weather conditions and have installed a thermal blanket over the pitch to prevent the grass from freezing in the build-up to the match.
The club head into the weekend second in La Liga, seven points behind rivals Real Madrid.