Jack Harrison has been in impressive form for Leeds United of late.
Harrison has picked up a muscular injury, which is set to keep him out for a short while.
The wide-man has been a key player for Leeds recently, due to a series of injuries to their attacking players.
But Harrison will not feature for Leeds against Blackburn Rovers or Ipswich Town in the next fortnight.
“It’s not serious injury because he will be back next week, but this will prevent him from playing the next two matches,” Bielsa said.
Harrison’s absence is a blow for Leeds, but it was not certain whether he would start anyway.
Pablo Hernandez has returned to full health over the international break, and he is predicted to come straight back into Bielsa’s starting line-up.
Leeds also have Gaetano Berardi and Kemar Roofe to pick from at the weekend, with many of their injured players making it back off the treatment table.
If Leeds can beat Blackburn they could move back to the top of the Championship table.
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