During an appearance on Paul Allen's radio show on KFAN, Minnesota Vikings linebacker Chad Greenway would not elaborate on why he attended, but did not participate in the team's mini-camp last weekend.

"Coach [Brad Childress] and I had a little agreement and that's all I can say about that," Greenway said, according to Judd Zulgad of the Star Tribune. "You'll have to ask the head guy about that one.

"It was sort of a special situation that we had worked out and it was good...It's something that's going to stay in house."

Greenway says he is 100% and that his inactivity last weekend was not related to his contract, which will pay the 17th overall pick of the 2006 NFL Draft $3.17 million dollars this upcoming season.

"Nothing like that," Greenway said if it was contractually-related. "You know that's not me."

If it's not health, and it's not money, what could possibly keep Greenway from participating in an off-season practice?

Greenway's interview with Allen can be heard via this link.