My understanding is that it’s an ACL tear. Since surgery was required it’s almost certainly Grade 3. This means the ligament is completely torn in two or detached fully from the bone. The injury is especially concerning because only 65% of elite athletes return to their pre-injury performance levels. The best case scenario is a 9 month return date, but caution often pushes it to 12 months. Nolen’s surgery was on December 30. While he could return in October, it’s certainly possible he’s out until December. Since fear of re-injury is such a big recovery factor I suspect they want him on the field for at least a couple of 2026 games just to build his self confidence.