Campbell was cleared to play and was a full participant in practice. He had been limited on Thursday. He suffered a concussion Nov. 24 during a loss to the Pittsburgh Steelers.
"It was tough to sit out," Campbell said. "I thought it was important to get back playing, but at the same time there's life after football, so I wanted to make sure that part was handled correctly before I got back on the field."
Chudzinski said the Browns will decide on the backup when the coaching staff meets Friday and would announce the decision on game day.
"Whatever happens during the game, we have to be ready for," Chudzinski said. "That's part of this league."