Real Sociedad are coming off a 0-1 victory against Mallorca, while Athletic Bilbao drew 1-1 with Rayo Vallecano in their last matches. The Basque derby promises to be an exciting encounter with both teams vying for a place in the Copa del Rey final.
For the semi-final, Real Sociedad will be without Álvaro Odriozola (cruciate ligament tear), while Athletic Bilbao are missing Yeray Álvarez (doping ban), Benat Prados (cruciate ligament tear), and Nico Williams (pubalgia).