Ernesto Valverde is hopeful the injury suffered by Luis Suarez is not serious after the shock away loss to Levante.
Barcelona went top of LaLiga after crushing Real Valladolid 5-1 on Tuesday, with Lionel Messi having a hand in four of the goals.
Strong performances against Inter and Borussia Dortmund suggest Slavia Prague could trouble Barcelona, according to Ernesto Valverde.
Liverpool wore t-shirts in support of Luis Suarez in 2011 after the Uruguayan racially abused Patrice Evra.
Barcelona and Real Madrid's clash had to be postponed due to political unrest and Ernesto Valverde wants a swift resolution.
Barcelona's front three of Antoine Griezmann, Lionel Messi and Luis Suarez were all on target as they beat Eibar to go top of LaLiga.
Antoine Griezmann opened the scoring as Barcelona's much-vaunted front three showed signs of a growing understanding at Eibar.
Eibar were willing opponents but still had no answer to Barcelona's brilliant trio of Antoine Griezmann, Lionel Messi and Luis Suarez.
Oscar Tabarez talked about Luis Suarez, who will miss Uruguay's international friendlies against Peru.
Barcelona had Ronald Araujo and Ousmane Dembele sent off late in their 4-0 win over Sevilla, to the bemusement of Ernesto Valverde.