Barcelona bring a 1-0 first leg lead back to the Camp Nou and are clear favourites to progress to the Copa del Rey semi-final. But Real Sociedad know that if they can get their noses ahead, negating the away goal, then the pressure falls back on their hosts.
Barcelona team news
Copa keeper Cillesson will start in goal for Luis Enrique, Ter Stegen not even selected in the squad but other than that the manager is not taking too much for granted. With the MSN trident leading the attacks he will be aiming to kill the tie off quickly, allowing the chance to rest certain players ahead of this weekend's league game away to Betis.
Piqué and Umtiti line up in the heart of defence with a likely move of Mascherano into a less familiar midfield alongside Denis and André Gomes.
Barcelona confirmed XI: Cillessen, Sergi Roberto, Piqué, Umtiti, Jordi Alba, Denis, Mascherano, André Gomes, Suárez, Messi, Neymar,
On the bench for the home side are: Masip, Rakitic, Arda Turan, Paco Alcácer, Digne, Aleix Vidal and Mathieu.
Real Sociedad team news
Eusebio will send out an expected strong line-up with ex-Madrid man Illarra coming back into the side after missing the weekend league game against Celta Vigo. Two other former Blancos, Sergio Canales and Esteban Granero drop out. Willian José will again lead the line but will hope to get some decent service from Vela and Oyarzabal.
Real Sociedad confirmed XI: Rulli, Aritz Elustondo, Raúl Navas, Íñigo Martínez, Yuri, Illarramendi, Zurutuza, Vela, Xabi Prieto, Oyrarzabal, Willian José.
Replacements will be selected from: Toño Ramírez, Mikel, Juanmi, Granero, Canales, Odriozola and Rodrigues.
The referee for tonight's game is Martínez Munuera. Follow all the action right now with AS English.