Panthers' Brian Burns not practicing amid contract stalemate - ESPN
Raiders vs. Khalil Mack: Here's the sticky situation
Why the Raiders were smart not to pay Khalil Mack
Claim that Raiders don't have cap space for Khalil Mack is off the mark - NBC Sports
Las Vegas Reportedly Tried To Trade For Khalil Mack In March
Report says chance Raiders will trade Khalil Mack 'very real', Raiders/NFL
Raiders had option to sign Khalil Mack to deal cheaper than Bears extension before trade
Derek Carr on the Raiders' Khalil Mack trade: 'It isn't what anybody wanted'
Claim that Raiders don't have cap space for Khalil Mack is off the mark - NBC Sports
Raiders' Khalil Mack: How holdout could impact regular season