Chip Kelly has already moved Russell Westbrook Jersey on from the me s that ended his tenure in Philadelphia last December. He made that much clear in his as the new 49ers coach. But his past isn't exactly going away.On Monday, former guard ripped Kelly in an Mathis, who joined the last season and won a Super Bowl with the team, corresponded with Klis on a wide range of topics, but his quote about Kelly is what will stick.According to Mathis, there's no way that Kelly would've been able to handle the championship-caliber Broncos."There were many things that Chip had done that showed me he wasn't building a championship team," Mathis wrote in his to Klis. "Two of the main i sues that concerned me were: 1. A never-evolving, vanilla offense that forced our own defense to play higher than normal play counts. 2. His impatience with certain personality types even when they were blue-chip talents. The Broncos team I was Mason Jones Jersey on would have eaten Chip alive. I don't think he could have handled the plethora of large personalities." Mathis, a member of the Eagles from 2011 until 2014, played under Kelly's reign for two seasons. The Eagles won Kenyon Martin Jr. Jersey 20 games in those two years. But the team with the two-time Pro Bowler, who wanted a new contract, before the 2015 season.Before the Eagles even cut Mathis, he made it clear to Kelly that he wanted to be set free. According to his emails with Klis, Mathis even sent this YouTube video to Kelly in March. Seriously, he sent him this:Per Mathis, the Falcons, Dolphins, Vikings, Patriots, Giants, Jets, 49ers, Seahawks, Titans and Redskins were interested after Moses Malone Jersey the Eagles dumped him. Eventually, the Broncos got in the mix -- oddly after Mathis says he had a dream that John Elway called him up. The rest is history: Mathis landed with the Broncos and won a Super Bowl. Meanwhile, Kelly took over as the 49ers coach last month. Last week, Mathis spoke to and weighed in on the 49ers' decision to hire Kelly. He was at least a little more complimentary during that exchange."I think Chip Kelly, he's a good coach," Mathis said, "And I think he'll Jae'Sean Tate Jersey have better succe s if he's not trying to wear too many hats."Mathis' deal with the Broncos concluded at the end of this past season, so he'll enter free agency next month. He could even retire given he's 34. If he does hang around for another season, San Francisco probably isn't a likely destination.