The Minnesota Vikings might not be able to keep defensive end Ray Edwards. They did find a way tonight to lock down the services of Brian Robison, who is probably a better all-around end. Robison signed a three-year contract worth $14 million, according to Adam Caplan of FoxSports.com. Minnesota is in the process of revamping its defensive line this offseason as tackle Pat Williams is moving on and there is a good chance Edwards will depart. Now, Robison will be in place along with mainstays Kevin Williams and Jared Allen. Source: National Football Post