The Kansas City Chiefs have signed head coach Andy Reid, general manager Brett Veach and President Mark Donovan to contract extensions, team Chairman and CEO Clark Hunt announced Monday. The new deal makes Reid the NFL’s highest-paid head coach, per Tom Pelissero of NFL Network. His extension runs through the 2029 season while Veach’s goes through the end of the decade. The trio have been together since 2017, leading the Chiefs to unparalleled success. Over the past seven years, the Chiefs have claimed three Super Bowl championships and four AFC Championship Game victories while tallying a rec…