The Minnesota Vikings have three NFL caliber corners on the roster in Byron Murphy Jr., Andrew Booth Jr. and Akayleb Evans. Getting a cornerback in the first round is an idea that has a lot of merit. Jason McIntyre of Fox Sports has the Vikings going that direction by taking Penn State cornerback Joey Porter Jr. at 23rd overall. The Vikings lost Patrick Peterson in free agency, and now their starters at CB will be Andrew Booth (limited to 105 snaps in his rookie year) and Akayleb Evans. They picked up Byron Murphy to play in the slot. Having only…