Urlacher has no contract for next season. So unless he makes a dramatic comeback before Sunday or the Bears get into the playoffs, Urlacher could have already played his last game for the team.
Forte sprained his right ankle early in the second half of Sunday's 28-13 win over Arizona — the third time he's had the same injury this year.
"I know it is going to be painful, especially when you get tackled and hit on," he said. "It will be just like the Dallas game, when I got hit on the first play and I just had to get re-taped."
Starting safety Chris Conte (hamstring) and backup linebacker Blake Costanzo (calf) did not practice Friday. They are listed out for the game. That means Anthony Walters will make his first NFL start in Conte's place. Running back Armando Allen (knee) also missed practice and is questionable.