Inaki Williams' medical evaluation revealed that the Athletic Club player has a sprain in the external lateral ligament of his right ankle, therefore Bilbao's medical personnel will continue to monitor his progress to judge his physical state as the days pass.
Inaki was injured during a match against Cadiz at the Nuevo Mirandilla, where he scored.
He did not complete the game in the greatest physical condition, and testing on Tuesday revealed that he had a sprain in the external lateral ligament of his right ankle.
Inaki has made over 300 first-team appearances for the club, including a La Liga record of over 200 consecutive games. If he doesn't recover in time he will miss Bilbao's game against Espanyol.