Brentford head coach Keith Andrews has provided an injury update on defender Kristoffer Ajer.
The Norway international was absent from the Bees' 3-1 Premier League win against Newcastle United on Sunday afternoon at Gtech Community Stadium.
"Kris picked up a spasm in his back yesterday [Saturday] in training," confirmed Andrews.
"He felt something a bit awkward and it wasn’t great when he woke up today so he wasn’t in the squad."
After Harvey Barnes opened the scored for the Magpies, Kevin Schade headed Brentford level on 56 minutes.
Igor Thiago turned the game around from the penalty spot before adding his second and the west Londoners' third in stoppage-time.
On defeating Newcastle in the final game before the November international break, Andrews added: "It was thoroughly deserved, it was an outstanding performance.
"We maybe edged the first half without creating too many clear-cut opportunities - I would say we looked the more likely.
"Half-time, going a goal down, I just wanted us to remain calm and focus on what we talked about before the game.
"There were a couple of tweaks on how we could improve things... I thought we were outstanding in the second half, and our performance levels went through the roof."