Rodgers was medically cleared from his collarbone injury on Tuesday night by team Dr. Pat McKenzie.
McCarthy told reporters that the two-time NFL MVP would receive extra individual work in order to get up to speed after his two-month absence.
"I kept an open mind to it, but I think it really speaks to Aaron with just with what he's done through the rehab phase," McCarthy said. "... He was able to clear each hurdle earlier than the norm. His rehab process was very fluid, very clean and it has put him in this position today to get ready for Carolina."
The Packers (7-6), who are 3-4 in the absence of Rodgers, may need to run the table in hopes of securing a postseason berth. They will be at Carolina (9-4) on Sunday, host the Minnesota Vikings (10-3) and then finish at the Detroit Lions (7-6).
Rodgers took to Instagram on Tuesday to show the progress from his injury, which was sustained after he was tackled by Vikings linebacker Anthony Barr in Week 6.
"It's been a long road from that day to this, but I'm happy to say I've been medically cleared to return," Rodgers wrote. "Thanks for all the love, support, prayers, and well wishes over the past 8 weeks (heart) and a big thank you to Dr McKenzie and our incredible training staff. #riseagain"