According to this NFL.com page (scroll way down), the Vikings will be playing host to safety O.J. Atogwe at some point.

Atogwe received interest from the Vikings when he was a free agent last year but said “God told him” that the Washington Redskins was the team to sign with.  Earlier this month, the Redskins cut Atogwe loose after a disappointing season.

In his first six NFL seasons with the Rams, Atogwe became known as one of the league’s best ballhawks.  In 2011, he had injuries to his hamstring and knee and toe that played a part in his lack of production.

Atogwe will also visit the Detroit Lions.

At age 30, signing Atogwe would be a curious choice as the Vikings try to rebuild, but the safety position lacks the most depth on the Vikings roster with Husain Abdullah and Tyrell Johnson currently being free agents.