Percy Harvin is going to be just fine. No need to worry. The Vikings are getting that message across loud and clear after a health update Tweet that Harvin sent out on Monday night revealing his need for surgery on an injured shoulder.

On Tuesday, while attending a Tony Dungy speaking function at the Westin in Edina, Vikings head coach Leslie Frazier provided a brief update on his top receiver. Harvin, Frazier said, played with a sprained acromioclavicular (AC) joint at points last season. But it wasn't until two or three weeks ago, when Harvin began feeling discomfort in his shoulder while lifting weights, that he knew something was wrong.

Said Frazier: "He just felt like, 'Ya know what, I'm gonna need to get this checked out. Because it's continuing to bother me.'"

Harvin had an MRI on the shoulder, which Frazier said showed some damage around the AC joint that will best be cleaned up with some minor arthroscopic surgery.

Harvin has yet to schedule the procedure but isn't expected to have a recovery time longer than a week or two once he undergoes the operation.

The Vikings' first session of Offseason Training Activities is scheduled for May 29 and Harvin should be back up and running by then.

As for the Vikings' other injured offensive star, Adrian Peterson, Frazier said his prize running back was impressive when he began running on land for the first time last week at Winter Park. Still rehabilitating from a severe knee injury suffered in Week 16 of last season, Peterson continues to make strides in his recovery and continues to amaze the Vikings' staff with his ambition.

Asked if the team considered putting a parachute on Peterson last week to prevent him from trying to run too fast, Frazier laughed.

"We had that conversation too," Frazier said. "He asked, 'How fast should I go?' We're trying to judge movement and he wants to run a 4.3 40. He has to let that graft continue to heal. And he understands there's a time frame he's working within. So far so good."