The Copa del Rey Round of 16 draw was conducted on Monday.
This follows the conclusion of the Unionistas’ victory over Villarreal in the round of 32.
Real Madrid will face Atletico Madrid in the last-16 in away tie.
The last-16 fixtures will take place next week.
Here is the full draw:
Unionistas vs FC Barcelona
CD Tenerife vs Mallorca
Getafe vs Sevilla
Osasuna vs Real Sociedad
Valencia vs Celta
Athletic vs Alaves
Atletico Madrid vs Real Madrid
Girona vs Rayo Vallecano