A derby at San Mamés will decide who goes through to the quarter-finals
Athletic Club will face CA Osasuna in the Copa del Rey round of 16, with the single-leg knockout tie taking place at San Mames.
The match will be played on Thursday 16 January at 19:30.
These are all the Copa round-of-16 fixtures:
• Pontevedra CF vs Getafe CF
• Ourense CF vs Valencia CF
• UD Almería vs CD Leganés
• Elche CF vs Atlético de Madrid
• Real Madrid vs RC Celta
• FC Barcelona vs Real Betis
• Real Sociedad vs Rayo Vallecano
• Athletic Club vs CA Osasuna
