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The Minnesota Vikings have turned the page on the 2013 season, attempting to put behind them an ugly year that provided no clarity at quarterback and produced the worst defense in the NFL in terms of points allowed (30).

Unsurprisingly, owners Zygi and Mark Wilf relieved Leslie Frazier of his head coaching duties. Whether you liked him or not, something had to change to invigorate the listless club, and the Wilfs put general manager Rick Spielman in charge of replacing Frazier.

Over the span of several weeks, head coaching candidates came and went, and former defensive coordinator Mike Zimmer eventually surfaced as the new face of the Vikings. For those unfamiliar with Zimmer, he has a slightly different style than Frazier.

Easily correctible mistakes may now be referenced in a slightly more colorful language.

With Zimmer came further housekeeping, as reports indicate that both offensive coordinator Bill Musgrave and defensive coordinator Alan Williams are out. Replacing them will be Norv Turner and George Edwards, respectively.

Master Tesfatsion of the Star Tribune also reports that Turner's son Scott will be Minnesota's quarterback coach, already meeting with prospective players at Senior Bowl practices.

With those moves, the Vikings offense will look much different than this past season and the same could be true for the defense. Zimmer and Edwards, who both worked under Hall of Fame coach Bill Parcells, may consider a hybrid scheme or complete overhaul in 2014.

Given the Vikings' current list of 20 free agents and $27.582 million in cap space, Spielman will need to make critical decisions that best utilize the team's financial situation.

With that said, we've highlighted six cost-effective moves that Minnesota should make this offseason, whether that involves signing or releasing a player, or restructuring his contract.

Statistics courtesy of NFL.com, unless otherwise noted. Player rankings and advanced statistics courtesy of Pro Football Focus (subscription required).

All contract details courtesy of Spotrac.com.