The hits just keep coming.
The Athletic's Matt Barrows reported Thursday, citing a source, that 49ers linebacker Dre Greenlaw will undergo a procedure and is expected to miss the next four to six weeks.
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NFL Media's Ian Rapoport later reported Greenlaw will miss six to eight weeks.
Greenlaw injured his groin in the 49ers' 41-33 Week 1 win over the Detroit Lions. He was not seen Thursday on the practice field.
The 24-year-old linebacker made his presence felt in the season opener, finishing with six tackles and a key pick-six in the win.
San Francisco 49ers
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Selected in the fifth round of the 2019 NFL Draft, Greenlaw combined for 178 tackles his first two seasons with the 49ers, including 10 tackles for loss.
Azeez Al-Shaair will step in for Greenlaw as the 49ers' weakside linebacker, and Demetrius Flannigan-Fowles is expected to start at strongside linebacker.