Akers (Achilles) wasn't tendered by the Vikings, making him an unrestricted free agent, Tom Pelissero of NFL Network reports.
The Vikings placed Akers (Achilles) on injured reserve Wednesday.
Head coach Kevin O'Connell said Monday that Akers underwent an MRI that confirmed he sustained a torn left Achilles' tendon in Sunday's 31-28 win over Atlanta, Ben Goessling of the Minneapolis Star Tribune reports.
Coach Kevin O'Connell relayed after Sunday's 31-28 win over the Falcons that the Vikings believe Akers has an Achilles' injury, Kevin Seifert of ESPN.com reports.
Akers was forced out of Sunday's game against the Falcons with an ankle injury.
Akers carried the ball nine times for 19 yards and a touchdown and caught his only target for six yards in Sunday's 24-10 win over the Packers.
Akers had one carry for eight yards and one reception for seven yards on his lone target in Sunday's win at Chicago.
Akers had five carries for 15 yards and two receptions for three yard on two targets in Sunday's loss to Kansas City.
Akers had five carries for 40 yards and two receptions for 11 yards on two targets in Sunday's win at Carolina.
Akers is active for Sunday's game at Carolina, Alec Lewis of The Athletic reports.