Zulgad’s four-and-out: Vikings’ concerns include Danielle Hunter and Jordan Addison

As the Minnesota Vikings are set to open up training camp next week, there are multiple concerns that need addressing writes @jzulgad.

Summer vacation is over.

Vikings’ rookies are scheduled to report to training camp on Sunday at TCO Performance Center, with veterans following two days later and the first open practice a week from Saturday.

There will be many interesting storylines to follow. Here’s a look at a few of them as Kevin O’Connell begins his second season as coach.