49ers' Jerick McKinnon may have had another setback

San Francisco 49ers running back Jerick McKinnon (knee) suffered another setback in his return to practice on Tuesday, general manager John Lynch said Wednesday.

What It Means:

“Yesterday we brought him out and it’s a real bummer because he keeps getting to the final step,” Lynch said. “And we did it a month ago. And we got to that step and he kind of regressed and I would say yesterday we had a similar situation." This is the second time this summer that McKinnon suffered a setback while attempting to return. It doesn't sound like he will be available for Week 1.

McKinnon totaled 991 yards from scrimmage with 5 touchdowns on 150 carries and 51 receptions (68 targets) for the Minnesota Vikings last season.