Injury Updates: Juszczyk, Newton, Leonard

We rounded up a few injury updates earlier today, and now we have another batch to pass along:

• 49ers fullback Kyle Juszczyk will miss four to six weeks of action with a sprained MCL, as Tom Pelissero of the NFL Network tweets. Pelissero also says Juice, one of the league’s most important fullbacks, will get a second opinion. There is some hope that the Harvard product can return before four weeks.
• Panthers QB Cam Newton will not travel with the team to London this week, as Brendan Marks of the Charlotte Observer writes. Head coach Ron Rivera said Newton is making progress in his rehab of a Lisfranc injury in his left foot, but there’s still no definitive word as to when he might return.
• The Colts are on a bye this week, and they should have a big boost when they return. LB Darius Leonard, who has missed the last three games with a concussion, shared a photo on IG saying he’s been cleared to play.
• Raiders DE Arden Key suffered a sprained patellar tendon during the team’s win over the Bears on Sunday, as Ian Rapoport of NFL.com reports (via Twitter). He will miss several weeks, which led Oakland to work out a few edge defenders today.