Football GM: Hard Knocks Jets, Johnny Manziel, Dalvin Cook, Zack Martin & more camp notes

Mike Sando is on the road covering training camps, and he and the GM Randy Mueller have both watched the Hard Knocks premiere. What are their takeaways? And what about a GM's take on the Johnny Manziel documentary? All that plus Zack Martin's holdout, Dalvin Cook, the Commanders and tons more camp notes. Learn more about your ad choices. Visit megaphone.fm/adchoices