Cleveland Browns defensive end Olivier Vernon is not practicing on Tuesday and it looks like a longshot that he will be ready to go for Thursday Night Football, according to Mary Kay Cabot of Cleveland.com.

Vernon is dealing with a knee injury that held him out of the last game against the Buffalo Bills and it's unclear when he will be back. Browns head coach Freddie Kitchens was asked on Tuesday if he was optimistic about Vernon playing and he said there is still hope he could wake up on Thursday and feel better.

“I wouldn’t say I’m optimistic,” Kitchens said, via Nate Ulrich of The Alliance Review. “I’m just kind of just waiting to see. We don’t really know. Hopefully he wakes up feeling great.”

Chad Thomas started in Vernon's place against the Jets, and he will probably get the start again on Thursday if he were unable to play. Kitchens was excited heading into the Bills game to see Thomas put everything together he has been working on and prove he belongs on the field.

“I think his motor, his passion, his anticipation, his understanding of gap control and where he has to be and where he fits in,” he said, via Jeff Risdon of Browns Wire. “It is just a matter of doing it every down now.”

The Browns currently sit with a 3-6 record and have an uphill battle going forward to make the playoffs. If they lose against the Pittsburgh Steelers, that might be the final nail in the proverbial coffin.