Barcelona midfielder Frenkie de Jong is battling to recover from a hamstring tear.
De Jong suffered the setback before the international break and remains sidelined.
Indeed, there is now a doubt that he will make the return-leg of their Copa del Rey semifinal against Real Madrid next week.
“If after the tests, the hope was at 10% for him to play against Real Madrid, we are now at 25%," reliable sources at the club informed AS.
Along with De Boer, Pedri, Ousmane Dembélé and Andreas Christensen are also battling to recover for the Copa El Clasico.