Per Rapoport, this is at least the fourth concussion Reed has suffered during the NFL career. Others have noted at least six known concussions for the tight end. A once promising career has been derailed by the numerous concussions. At the very least, Reed is likely questionable, if not doubtful, for Week 1 against the Eagles. It’s possible we see a mix of Vernon Davis and Jeremy Sprinkle in Reed’s absence.