Leeds United will have to do without two key players as they take on Chelsea at the weekend.
The Elland Road club are hoping to finish in a respectable mid table position after their first season back in the Premier League.
They will be hoping they can put in an excellent display against the high flying Blues at the weekend.
However, they will be without Pascal Struijk and Pablo Hernandez.
"Neither will be able to play," Bielsa said in his pre-match press conference.
"The response I must give is the progress of his evolution will tell us when he returns," Bielsa added when pressed on Struijk's issue.
"Given the injury Pascal has, it is not a serious injury because various players of ours have played with this injury.
"That's why I say it's not serious. While he is not needed urgently, I prefer he has more time to recover completely."
