Whites head coach Marcelo Bielsa has Kalvin Phillips back from suspension but Tyler Roberts out following a kick to his calf.
This is how we think Leeds will line-up at Griffin Park.
1. Kiko Casilla
Could be close between Casilla and Ilan Meslier after another unconvincing display at Forest but the Spaniard was again defended by Marcelo Bielsa and will probably get the nod. Picture by Bruce Rollinson. | jpimedia
2. Luke Ayling
The PFA player of the month for December has been first-choice right back for some time and hard to see that changing. Picture by Bruce Rollinson. | jpimedia
3. Liam Cooper
Leeds United's club captain, the centre-back will be desperate to see the Whites return to keeping clean sheets. Picture by James Hardisty. | jpimedia
4. Ben White
The Brighton loanee has stepped into midfield of late, attempting to fill the void left by the suspended Kalvin Phillips but Phillips' return will allow White to move back to centre-back. Picture by Jonathan Gawthorpe. | jpimedia
5. Stuart Dallas
Another to have moved into midfield of late but likely to start at left back against Brentford with Gjanni Alioski having had a hard time in the position against Forest. Picture by Jonathan Gawthorpe. | jpimedia
6. Kalvin Phillips
Back available after a three-match ban and Marcelo Bielsa has already confirmed Phillips will start and surely in the holding midfield role. Could replace Gjanni Alioski with Stuart Dallas playing left back. Picture by Bruce Rollinson. | jpimedia