Johnny Manziel has reminded Cleveland Browns' offensive coordinator Kyle Shanahan of Robert Griffin III during his early workouts.
"Johnny and Robert are very similar," Shanahan told USA TODAY Sports. "They're both talented guys who can make plays with their legs. But there comes a time in the NFL when they're going to keep you in the pocket, and you're going to have to have that ability to make the throws with your arm and mind.
"And Johnny, just like Robert, has that arm talent and intelligence to do that."
Manziel has been everything Shanahan had hoped.
"Perception becomes everyone's reality, but Johnny has been here working his tail off day and night, doing everything we ask," Shanahan said. "He's really attacked it every day, done a good job even as each week gets harder as we throw a lot more at him.
"I've been very impressed."