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.
1. GK - Casilla
Bielsa often uses the cup competitions to give match minutes to his number two goalkeeper.
2. CB - Cooper
A chance for him to pick up some much needed match minutes on his return from injury.
3. CB - Phillips
May have been afforded the afternoon off but with a suspension incoming minutes are needed to stay sharp. Crawley usually go with two up top, so a slot in defence makes sense.
4. CB - Struijk
A player who has proved hugely useful amidst injuries in the defensive ranks. You'd think this is another chance to prove himself. Will need to stand up to the physical challenge.
5. RWB - Ayling
No afternoon off for Bill. He may, though, move back into his usual right-back role after a recent spell in the heart of defence. He'll have license to get forward.
6. LWB - Davis
A player Leeds fans need to see more of. Has pace to burn and a chance at left-back would be welcome.