Olmo suffered a shoulder dislocation during victory over Atletico Madrid last night.
Scans this morning confirmed the injury, with the recovery expected to take at least a month.
Therefore, he will not return until 2026 and will miss the remaining matches this December: Betis, Eintracht Frankfurt in the Champions League, Osasuna, Villarreal , and the Copa del Rey tie.
Olmo landed awkwardly while scoring his goal and was unable to celebrate. Although he smiled from the ground when he saw the ball go into the net, the truth is that the Catalan player couldn't even get up, and his teammates quickly called for medical assistance.
He left the pitch with a towel under his left arm to secure the area as much as possible, but with worrying signs of pain.