Wide receiver Percy Harvin went from an unhappy camper at Vikings minicamp Tuesday to asking for a trade out of Minnesota.
Tom Pelissero of 1500ESPN.com said the 24-year-old requested a trade one day after saying he was "not happy" with many issues, without going into detail.
First-year general manager Rick Spielman told Pelissero the Vikings "have no interest at all in trading Percy Harvin."
Harvin said he wouldn't practice until the issues were resolved, but he did individual drills.
Harvin is a premium playmaker at a position at which the Vikings are perilously thin. Other than running back Adrian Peterson, no player is as essential to the success of the offense and quarterback Christian Ponder in 2012.
The Vikings have concerns about Harvin's durability, stemming mostly from his history of migraine headaches, and he has clashed with coaches in the past -- including Brad Childress and members of the Florida coaching staff. Harvin also had two failed drug tests on his record before he entered the NFL, which caused some teams to cross Harvin off their draft boards.
Harvin has two years remaining on his rookie contract worth a total of $2.65 million. He's coming off of shoulder surgery in the offseason.
"I won't get into specific issues, but we're here and hopefully we'll get things worked out, and go from there," Harvin said Tuesday. "We kind of keep everything in-house. If specific people choose to tell you the stories, then they do. I keep everything in-house and we deal with stuff in-house."
The Vikings signed Jerome Simpson in free agency. He's likely to be the team's No. 2 receiver but must serve a three-game suspension to begin the season.
Said coach Leslie Frazier: "He and I will talk some more, but it's something we'll talk through. It's not something that can't be handled. It's not something that we can't talk through, not at all."
Harvin practiced once during the second week of organized team activities after spending the first week doing conditioning exercises as part of his rehab from shoulder surgery.