Sam Bradford has had a relatively disappointing NFL career with injuries and generally underperforming. 

"I understand they gave up on (Nick) Foles," an NFL executive said. "But I don't know why they're building up Bradford so much. I'm still confused about that whole deal. You can only talk about him being the first pick of the draft (in 2010) for so long. What has he done since then?"

The executive believes Chip Kelly can turn Bradford into an effective NFL quarterback.

"If Bradford had gone anywhere else you wouldn't even be talking about him," he said. "He's been hurt the past two years and even when he was healthy, he was just average. But he's with Chip Kelly, so there's hope I guess. Chip Kelly is the one guy who can make Bradford a success."