The Vikings announced the release of the 2013 third-round draft pick on Friday after signing defensive end Brian Robison to a one-year extension and adding depth on the defensive line in free agency.
Crichton struggled to stay healthy during his three years in Minnesota, being placed on injured reserve last Aug. 31 after he was waived/injured and not claimed by any teams.
He also ended the 2015 season on injured reserve after suffering a concussion against Arizona. In the 13 games he played in 2015, he recorded nine tackles on defense and five on special teams.
During his rookie season, he was active for eight games, including five of the last seven, but played only two games on defense in the first half of the season.
He was the first Oregon State player drafted by the Vikings since 1967.
The Vikings save about $770,000 on their 2017 salary cap by releasing Crichton, putting them about $19.5 million under the cap.