"He tested out well, and he has a chance to possibly do something on the field," McCarthy said. "That's our plan with him."
Facing a quick turnaround to play a physical Detroit team that beat them at Ford Field late last season, the Packers need a couple of key players to heal up quickly.
But Starks might be the biggest injury concern. Fellow running back Ryan Grant said Starks is generally in good spirits, a potential indication that he won't be out for very long.
"I expect him to be OK," Grant said. "Spirits are always a good bet in general. If a player's in good spirits, it's positive."
Copyright 2011 by The Associated Press