McCarthy said he is encouraged that Rodgers will be with the rehabilitation group, but stopped short of saying the team's franchise quarterback would be able to practice the rest of the week.
Instead, he did rehab work on the side and extensive exercises with the medical staff inside the stadium.
"We're still collecting all the information (about) his specific situation", McCarthy said.
Quarterback Aaron Rodgers (knee) and safety Josh Jones (ankle) also missed the practice.
It's why the Packers aren't taking any chances on his knee, which Rodgers says is "sprained".
"Haven't even thought about that", Rodgers said.
"Obviously there's the hope of playing", McCarthy said.
Wearing a brace could be an option, depending on how the quarterback feels later in the week. "But ... two days is not going to make or break whether (we have) success, whether it's me and DeShone, me and Aaron, whoever it may be".
"Any time a player's injury, particularly when they bring him inside, based on the injury there's a protocol of what they go through to see if the doctor will clear them to go back out". There were a couple throws in which Rodgers said he got a "jolt" of pain after putting weight on his left leg. "To be in this room, you've got to be mentally and physical tough".