Leeds lost 3-0 against Crawley Town on Sunday where Bielsa’s squad gamble didn’t pay-off.
The decision to withdraw Liam Cooper and Pascal Struijk, both of whom are expected to be in the squad against Brighton & Hove Albion in the Premier League clash, left Leeds brutally exposed at the back.
Bielsa initially said that he would use Diego Llorente, the summer signing from Real Sociedad, in the under-23s to develop his fitness.
Llorente has struggled with injuries since joining his new club and has managed only one appearance this season so far.
The Spain international was lined up for an outing with the under-23s at Burnley on Monday, but when the line-up was published, he was missing.
Phil Hay of the Athletic has claimed that he has recovered from muscle strain and that his absence was not injury-related or down to fresh injury concerns.