Percy Harvin was a willing, if unhappy, member of the Minnesota Vikings in minicamp Tuesday. (Jim Mone / AP)

Although his coach expressed confidence that differences could be worked out, Minnesota Vikings wide receiver Percy Harvin has requested a trade.

He probably shouldn’t hold his breath waiting for that.

The Vikings aren’t particularly deep at wide receiver and, besides, he’s Percy Harvin, one of the team’s marquee players.

Harvin expressed his frustration on the first day of the Vikings' mandatory minicamp Tuesday. “I just put it this way, there's a lot of different things that have to be sorted out,” he said (via 1500 ESPN). “Just haven't been really happy lately. We've got a couple of things to work on. I'm here in the classroom. We'll go from there.”

What exactly is his gripe? “It's just a couple different issues,” Harvin said. “It's hard to try to tell you guys without telling you guys. I just keep it as that.”

Vikings Coach Leslie Frazier said Tuesday that Harvin’s issues would be resolved before training camp opens. “I really feel like when he and I sit down and talk in depth,” Frazier said, “whatever is in his heart or on his mind, we'll get through it.”

Harvin, the team’s top draft pick in 2009, has two years remaining on his rookie deal and is set to make $915,000 this season. He had career bests with 87 receptions, 967 yards and nine (total) touchdowns and underwent offseason shoulder surgery.

Harvin’s trade request was first reported by the Associated Press.

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