NFL scouts concerned about Manning’s arm strength

The last time he stepped off a football field, Broncos quarterback Peyton Manning was wrapping up a 33-touchdown, 17-interception, 4,700-yard season in Indianapolis. The yardage was Manning’s career high, and only once before in his 13-year career had he thrown more touchdown passes. Multiple pro scouts told NFL Network’s Albert Breer, however, that despite the…