Sociedad said Monday that Sadiq has a ruptured anterior cruciate ligament in his right knee and will need surgery. The club did not say how long he is expected to be sidelined but it’s unlikely Sadiq will be fully recovered by the end of the season.
He will not be available for selection for the World Cup 2022 set to be held in November.
The 25-year-old Nigerian player got injured in the team’s 2-1 loss at Getafe in the Spanish league on Sunday.
Sadiq was signed from Almeria near the end of the transfer window. He scored in his debut when Sociedad drew 1-1 with Atletico Madrid at the beginning of the month.
Sadiq previously played for several clubs in Italy. He helped Nigeria win a bronze medal at the 2016 Rio de Janeiro Olympics.