"The fact that I don't know what we're doing but everyone else does, that's concerning," he told reporters Tuesday. "We are not done with this process. We have not made a decision on the No. 1 overall pick."
What Kingsbury said he would do has become what he can do.
Rosen endured a trying rookie season in which he completed just 55.2 percent of his passes for 2,278 yards, 11 touchdowns and 14 interceptions while making 13 starts behind a patchwork offensive line. But amid all of the speculation about Rosen's future in Arizona, both Keim and Kingsbury said he has been exemplary since the team began offseason workouts last week.
"He's been phenomenal," Kingsbury said. "He couldn't have been better honestly. First one to show up. Engaging. Into it. Very sharp, as everybody knows. Can't say enough good things about my interactions with him so far."
Keim added: "We've had good communication. He is a pro's pro. And the one thing I've appreciated the most since we've drafted him. The kid has an unbelievable amount of mental toughness. You saw that last year as he took a beating and we went through the injuries that we went through up front. Physical toughness, mental toughness -- Josh Rosen has it all."