The La Liga title race is heating up, and Barcelona are in dire need of a victory. With Real Madrid five points ahead in first place, the Catalan giants cannot afford to be that much behind their biggest rivals, even though we have played just 11 games this season. The Spanish League is tough, and Madrid have opened a very good lead.
Barça can absolutely cut that lead and get the trophy at the end of the season, but they can't afford to drop points anymore, regardless of the opponent. When the opponent is third-place Sevilla away from home, then it's even more important.