The good news is that Thomas, Traylor and Holdman practiced on Wednesday, while a few others like Marty Booker and Desmond Clark worked on the side with trainer Tim Bream.
"We got a couple of guys back on the field today," Jauron said. "We'll have to see how the guys that practiced come through it tomorrow and the guys that worked on the side we'll re-evaluate them tomorrow."
Before missing the last two games with a foot injury, Thomas was among the league leaders in rushing. Among running backs with at least 50 carries he has the second highest average per carry at 5.5.
There could be some adjustment for Thomas with a new quarterback handing him the ball, but the offensive line has done a great job of opening up wholes for whatever running back has been behind center.
"I think it will come naturally because those guys do a great job up front," Thomas said. "I've got to go out and try to pick and chose (the hole) and see what they can do."
The addition of Thomas will take pressure off Chris Chandler, who will make his third consecutive start.
"I think it means a lot to probably everybody on the team," Chandler said. "It should help us in play calling and obviously as a quarterback you'd love to have a guy back there like Train and running as well as he has been so far this year."
Jerry Azumah had the best game of his NFL career against Detroit and along with his third career interception, he picked up the NFC Player of the Week Award for his 89-yard kickoff return.
"It's really special. It definitely feels good," Azumah said of the honor. "I couldn't have done it without the wedge and everybody contributing on special teams. They did phenomenal job of blocking and all I had to do was run.
"It was very rewarding because you work all week long toward the common goal of returning kicks in the end zone and we did it last week. I'm trying to go out and trying to produce and find ways to give my team the edge."
The return for a touchdown was the first since Glyn Milburn went 94 yards for a score against Green Bay on Dec. 13, 1998. On the heels of his career-long 89-yard return, Azumah is the current NFL leader in kickoff return average at 29.5 yards per return. The Special Teams Player of the Week award is the second such honor for the Bears this season. K Paul Edinger earned the same distinction following a game-winning field goal against Oakland on Oct. 5.