EDEN PRAIRIE, Minn. (AP) -- Star receiver Percy Harvin is voicing some frustrations with the Minnesota Vikings at the team's first day of a mandatory minicamp.

After a morning walkthrough practice Tuesday, Harvin told reporters that he hasn't "been real happy lately" and that a lot of things need to be sorted out before training camp begins.

Harvin has two years left on his rookie deal, but would not say that his displeasure is related to his contract.

Coach Leslie Frazier says he has talked with Harvin and plans to have more in-depth conversations. Frazier says Harvin's displeasure did not alarm him and that he was confident that they can work through any issues before training camp.