Leeds United have been hit by a defensive injury blow.
Spain international Llorente was forced off during the first half on Saturday with a leg injury and highly-rated Struijk was substituted late on following a heavy challenge by Nabil Fekir.
Captain Liam Cooper has yet to feature in pre-season and highly-rated centre-half Charlie Cresswell suffered a head knock during Friday's friendly at Fleetwood.
After the latest injuries to Llorente and Struijk, Bielsa faces a potential defensive nightmare ahead of the Premier League opener at bitter rivals Manchester United on August 14.
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