Barcelona must overcome Sevilla to reach the Copa del Rey final, while Athletic Bilbao were drawn to face Levante.
Antoine Griezmann heaped praise on team-mate Lionel Messi amid doubts over his Camp Nou future.
Barcelona head coach Ronald Koeman underlined Lionel Messi's importance after he scored his 650th goal for the club.
Barcelona edged past Athletic Bilbao at Camp Nou thanks to goals from Lionel Messi and Antoine Griezmann.
His contract details made headlines earlier in the day, but Lionel Messi turned attention to on-pitch matters with another landmark goal.
Barcelona are going through big changes and fans must be patient when it comes to major trophies, Ronald Koeman says.
Sevilla, Villarreal, Athletic Bilbao and Barcelona were all kept apart in the draw for the Copa del Rey last eight.
A simulation provided by Stats Perform AI puts Atletico Madrid firmly at the top of LaLiga at the end of the season.
Barcelona will appeal the two-match ban given to Lionel Messi for his red card in the Supercopa de Espana final.
Lionel Messi will miss Barcelona's next two matches after being shown a straight red card in the Supercopa de Espana final loss.