The Whites face a tricky third round tie against League Two opposition this weekend. The FA Cup, though, provides an opportunity for Leeds to give a run out to those pushing for starting places at Elland Road.
Tyler Roberts has been ruled out while club captain Liam Cooper and centre-back Diego Llorente are fit an available once again. The latter is unlikely to be risked and a number of United's Under-23s players - such as Joe Gelhardt and Sam Greenwood - may make the bench.
Here is the line-up we think Bielsa may choose against the Red Devils, with a host of changes to come. Crawley Town often opt for a 4-4-2, meaning Leeds would match up with a 3-3-1-3.