According to OverTheCap.com, the Vikings have a little over $18 million in cap room. That's middle of the pack among NFL teams, and the Vikings have room to make some moves without leveraging Adrian Peterson into taking a pay cut. If they want to make a splash, here are four other ways they could theoretically create more cap room this offseason:

•Release Chad Greenway: The 32-year-old linebacker missed four games due to injury in 2014 and watched Gerald Hodges and Audie Cole play well in his absence. His cap hit is $8.8 million, but if the Vikings release him, they can save $7.1 million.

•Restructure Greg Jennings: Jennings will have a cap hit of $11 million. That's a lot for a player who has averaged 63.5 receptions for 773 yards and five TDs in his two seasons here.

•Release Charlie Johnson: The veteran guard has a cap hit of $2.5 million, but the Vikings can release him to get all of that off the books. And that's what they're expected to do.

•Restructure Brian Robison: Robison, who turns 32 in April, has a base salary of $4.15 million with a cap hit of $5.65 million. There might be an opportunity to shave his base salary.

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