Offseason shoulder surgery will keep Frederick out of organized team activities and June minicamp, but the 28-year-old says he's almost fully recovered from Guillain-Barre Syndrome, which sidelined him for the entire 2018 season.
"(It) feels like I'm back, close to if not full strength," Frederick told ESPN's Todd Archer.
"I think that's where we are in the point of recovery and I think that’s going to be an important step to my return, being able to go through (practice in pads) and there’s going to be rust. You're going to have to knock the rust off during training camp and get back to doing those. You can do the movements on air as much as you want but it’s not until you're going against a live person that you feel football."
Guillain-Barre Syndrome is an autoimmune disease that weakens muscles and attacks the body's nervous system. The two-time All-Pro lineman was diagnosed last August.