A day after coach Bruce Arians said he doubts David Johnson will play again this season, the Cardinals running back said he’s still holding out hope he will be activated off injured reserve and be back on the field. Johnson has been out since suffering a disclosed left wrist in the season opener at Detroit, and although he is eligible to start practicing again this week, he’s still wearing a cast on his hand and until he gets that removed there will be no comeback in 2017. He still thinks there is a chance, however. “Yeah, I’m definitely still staying optimistic,” Johnson told azcentral sports on Wednesday. “That’s the thing, staying optimistic. I’m still trying to get on the field as soon as I can, but I’ve got to be 100 percent. I’ve got to make sure the wrist is 100 percent.” Arians raised eyebrows with his comments on Tuesday in which he made it sound as if neither Johnson nor fellow running back T.J. Logan, also on IR following surgery to repair a fractured left wrist, will have enough time this season to make it back healthy enough to play. When asked if that was a little stunning to hear from his coach, Johnson replied, “No, it’s not stunning. That’s the way he’s thinking. He’s been in the league and been coaching for a while. Like him, he doesn’t know. We don’t know what’s going to happen. I’m still in this cast for a couple weeks, so who knows what’s going to happen?” The NFL’s leader last season in touchdowns (20) and yards gained from scrimmage (2,118), Johnson said he can’t be sure if he will play again this year or be shut down until 2018. “I don’t know. I honestly don’t know what’s going to happen,” he said. “I still have this cast on, so who knows? No one knows. We’ll see.”