Injury-plagued Panthers linebacker Luke Kuechly retiring after eight NFL seasons
Carolina Panthers' Luke Kuechly abruptly retires from NFL after eight seasons
Celebrating Luke Kuechly, Smartest Linebacker to Play the Game
Luke Kuechly, NFL star with history of concussions, retires aged 28, Carolina Panthers
Pro Bowl stars respect early retirees but don't plan to join them
I was a seven-time Pro Bowler who retired early from the NFL aged 28 – now I have a new job with team I love
Why did Luke Kuechly retire? Panthers star explains his decision to end NFL career
Panthers LB Luke Kuechly retiring after 8 seasons in NFL – The Denver Post
Luke Kuechly, an All-Time Great Linebacker, Has Retired at 28 - The Ringer
Olsen says Kuechly 'very at peace' with sudden retirement