Tarron Jackson has landed on injured reserve two days after being taken off the field on a stretcher with a neck injury.

San Francisco placed defensive lineman Tarron Jackson on the Injured Reserve List, two days after he suffered a neck injury in a team practice. In a corresponding transaction, the team signed defensive lineman Jaylon Allen, most recently of the United Football League’s Memphis Showboats, to a one-year contract.

The 49ers have placed defensive end Tarron Jackson on injured reserve, the team announced on Tuesday. Jackson, 27, had to be taken off the field on a stretcher over the weekend after sustaining a neck injury.

DE Tarron Jackson was talking and moving his extremities after sustaining an injury during Sunday's practice. He was discharged from the hospital Sunday night and back with the team Monday.

San Francisco 49ers defensive lineman Tarron Jackson was taken to the hospital after a scary injury at training camp.

Here are the latest injury updates for 49ers DE Tarron Jackson after he was taken away from training camp practice in an ambulance.

Defensive lineman Tarron Jackson collapsed on the field toward the end of the San Francisco 49ers practice on July 27.

San Francisco 49ers defensive lineman Tarron Jackson was hospitalized after suffering an injury in practice on Sunday.

The San Francisco 49ers have officially announced the signing of defensive end Jaylon Allen to a one-year deal. To make room on the roster, the team placed defensive lineman Tarron Jackson on injured reserve after he suffered a neck injury during Sunday's practice.

The 49ers have placed Tarron Jackson on the Injured Reserve, per The Athletic’s Matt Barrows. Allen wasn’t invited to the NFL Combine, but he bench pressed 225 pounds 26 times at Memphis’s Pro Day, had a broad jump of 10 feet and four inches,