Controversial writer Robert Huber wrote a longform profile of the Eagles coach for Philadelphia Magazine (the print part, not Birds 24/7). He even managed a guerrilla interview of Chip. What did he learn?
Chip Kelly is so private, and such an interesting personality, that he has become an obsessive target of many writers, including me. (I was going to use the cliched Moby Dick metaphor, but calling the coach a "Great White Whale" might lead people to thinking I'm talking about race, or weight-shaming.)
The ultimate goal is the perfect longform profile, mixing fascinating details with moving stories told by those who know him best.