Aug 15, 2019; Glendale, AZ, USA; Oakland Raiders wide receiver J.J. Nelson (15) greets Arizona Cardinals wide receiver Christian Kirk prior to the preseason game at State Farm Stadium. Mandatory Credit: Mark J. Rebilas-USA TODAY Sports

49ers’ Nelson (knee) latest injury to WR corps

San Francisco 49ers wide receiver J.J. Nelson will be sidelined as long as one month with a knee injury, coach Kyle Shanahan announced Friday.

Nelson, who was signed by the 49ers two weeks ago, joins fellow wideouts Deebo Samuel (foot), Brandon Aiyuk (hamstring), Jalen Hurd (torn ACL) and Richie James (wrist) on the sideline due to injuries.

“J.J. Nelson has come in and done a really good job,” Shanahan said on KNBR’s “Murph & Mac show” on Friday morning. “He’s been banged up the last two days. We just got some injury stuff on him yesterday, so he’s going to probably be out here for the next month, so you lose another (receiver).”

The 49ers attempted to address the situation by signing former first-round pick Kevin White and fellow wide receiver River Cracraft on Thursday.

Nelson, 28, appeared in two games with the then-Oakland Raiders last season and caught four passes for 36 yards and a touchdown.

The 2015 fifth-round draft pick has 85 career receptions for 1,475 yards and 11 TDs in 58 games with the Arizona Cardinals (2015-18) and Raiders. The 49ers signed him to a one-year, $910,000 contract earlier this month.

–Field Level Media