The Whites have a major injury crisis on their hands with just 10 senior players available this weekend.
Kalvin Phillips, Patrick Bamford and Liam Cooper have all been missing with hamstring problems and face an extended period on the sidelines.
Rodrigo is battling bilateral heel pain and Pascal Struijk suffered a rare foot injury in training when two bones collided.
Junior Firpo is suspended while Jamie Shackleton (Achilles) and Dan James (adductor) are now both missing following the loss to City at the Etihad.
"Shackleton and James are out and Koch is available, that's the novelties," said Bielsa in Thursday afternoon's press conference.
"Shackleton has a problem in his Achilles tendon and James has a problem in his adductor muscles."
Robin Koch, though, is fit and available for Leeds this weekend.
Asked whether he was fit to start after five months out, Bielsa said: "It not an evaluation we'll make just yet. Ayling came back to start after 45 minutes with the 23s. Koch has accumulated training sessions here that are sufficient."
Here, we take a look at how Leeds United could line-up against Arsenal amid the injury crisis....
1. Meslier - GK
Bielsa's number one. Hard to lay any blame on him for midweek. Photo: Getty
2. Ayling - RWB
Has played centre-back since his return but would be ideal to see him moved back to the right of defence. His attacking play is missed. Photo: Getty
3. Llorente - CB
Will need a good showing from the Spanish international against Arsenal. Photo: Getty
4. Koch - CB
Hasn't played since the opening day of the season but needs must with the injuries. There was a very subtle hint from Bielsa that he has done "sufficient" training sessions. Photo: Getty
5. Dallas - LWB
It's the Stuart Dallas bingo... he'll be needed at left-back this week with Junior Firpo suspended. Photo: Getty
6. Forshaw - CDM
A saving grace in recent months. Thankfully he's back and at his best. His engine will be needed. Photo: Getty