McCarthy confirmed Alex Green would be the starter at running back after Starks suffered his injury in the last game.
Green, a second-year player, had been splitting carries with Starks the last few games. Before that, Green was the primary back in a three-game stretch after Cedric Benson suffered what turned out to be a season-ending foot injury in early October.
"It's a blessing to get a second chance to make a first impression again. That's rare," said Green, who leads the team with 360 rushing yards.
Veteran Ryan Grant also will see action in the backfield after the team re-signed him earlier this week.
If McCarthy gets his wish for a snow game Sunday night, he could be compelled to take a long look at Grant. He ran for Packers postseason records of 201 yards and three touchdowns on a snow-covered Lambeau turf in their rout of Seattle in the 2007 divisional playoffs.
"He plays well in the snow. History would tell you that," McCarthy said. "I'm comfortable with Ryan Grant."
Notes: Packers DE Mike Neal didn't practice this week and is doubtful for Sunday. But McCarthy said the news on Neal's injured shoulder from the last game was better than what team personnel initially feared. If Lang and Neal aren't cleared, the Packers would be down to six offensive linemen and four defensive linemen healthy enough for the game. Making a roster move this weekend to provide depth at one or both position groups is possible, McCarthy said. . Green is looking forward to potentially playing in snow for the first time. The West Coast native played in college at Hawaii and missed the final two months of his rookie season with the Packers last year because of a knee injury. "It's one thing I looked forward to when I was being drafted here - we play in the snow," said Green, a third-round pick. "I know that's a big thing around here."