The 49ers on Sunday placed veteran wide receiver J.J. Nelson on injured reserve with a knee injury, the club announced.
Nelson is expected to be sidelined for approximately a month with the injury, which he sustained last week during practice. The club is expected to reach an injury settlement with Nelson. The 49ers signed him to a one-year contract at the start of training camp.
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The 49ers re-signed defensive end Alex Barrett to take Nelsons spot on the roster. Barrett originally signed with the 49ers in February. He was waived on July 30, then re-signed on Aug. 2 and waived again on Aug. 13.
Also, defensive end James Lockhart, whom the 49ers claimed off waivers from the Pittsburgh Steelers on Saturday, informed the organization he is not going to continue to pursue a football career, according to a team spokesman.