Barcelona, La Liga footballer, will miss the last two seasons, his young Dutch midfielder Frankie de Jong for several weeks, after suffering a torn calf that kept him away from the last negative draw with hosts Sevilla.
On Sunday, the Catalan club said in a statement, "Through medical follow-up of first team player Frankie Young, a rupture of the soleus muscle of the right leg was diagnosed. The development of the injury will determine the player's availability."
According to several Spanish newspapers, international de Yong will be out for several weeks.
De Jong, 23, moved from Ajax Amsterdam to Barcelona last summer for 75 million euros.
He missed the Sevilla match due to "a strain in his right calf, which on Sunday turned out to be a severe injury.
The Spanish league returned on June 11 after stopping about three months due to the outbreak of the new Corona virus.
De Young has played 38 games this season in various competitions, 27 of which are in LaLiga (24 key), in which he scored two goals and two assists.
The main player in Barcelona's ranks was absent only in three games under the supervision of former coach Ernesto Valverde and current Kiki Citin.
Barcelona leads the league standings, 3 points behind Real Madrid, who can join Sunday if they win on Sunday at Real Sociedad.