After missing all of last season with a torn ACL, it looks like Jerick McKinnon is going to have wait even longer to make his San Francisco 49ers debut.

The Niners running back suffered a setback Tuesday in his return from injury that could land him on injured reserve, general manager John Lynch said on Wednesday.

This is the third setback McKinnon has suffered since this summer, per the San Francisco Chronicle.

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He also reportedly had a “flareup” in July that forced him to begin training camp on the physically unable to perform list, then was sidelined for weeks with knee soreness in early August. 

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