Jackson was an undrafted free agent that the team gave a $3,000 bonus to in the wake of the 2013 National Football League Draft. He played his college ball at Glenville State.
The news of Jackson's release isn't really that big a deal. What is important about it is the fact that it leaves the Vikings one body below the 90-man roster limit, as they currently have 86 players signed to contracts and contract offers out to rookies Sharrif Floyd, Xavier Rhodes, and Cordarrelle Patterson. This could mean that a signing is coming sometime in the near future here.
Could this move have been made to create space on the roster for the rumored Brian Urlacher signing? At this point, that might be too big a conclusion to jump to, but it is a possibility. Hopefully we'll find something out in the next couple of days.