Cardinals running back David Johnson doesn’t know how long he will have to wear a cast on his left wrist, much less when he will able to carry and catch a football. So, no, he doesn’t have a timeline for returning to the lineup. “Really just see how it goes,” he said. “I’m really just trying to make sure my wrist is 100 percent.” Johnson suffered a dislocated wrist against the Lions in the first game of the season. He underwent surgery and is expected to be out two to three months. Wednesday was the first time he met with reporters since suffering the injury. Johnson was placed on injured reserve and the earliest he could return is Nov. 9 against the Seahawks, though coach Bruce Arians has said it could be as late as Christmas. Johnson suffered the injury when he was tackled on a 24-yard reception in the third quarter. He had the wind knocked out of him on the play, and at first he didn’t realize he had a wrist injury, he said. “I was really focusing more on trying to catch my breath,” Johnson said. Johnson left the game briefly but returned the next possession. He fumbled on the first play, which he attributed to the wrist injury.