Kansas City Chiefs head coach Andy Reid is currently one of the most established coaches in the entire league. He's had more than a few ups and downs, but at this point in his career, the 62-year-old has no doubt as to what was one of the biggest mistakes he has ever made.

Reid admitted that one of his huge regret was not hiring Matt Rhule when he had the chance:

“Which was a dumb thing,” Reid said, via ESPN (h/t Michael David Smith of NBC Sports). “I should have found a spot. The next thing I know, he’s with the Giants. I was, ‘My god, that was not where I wanted him to go.'”

Before leading the Kansas City side, Reid spent six years with the Philadelphia Eagles. At that time, Rhule was an assistant for the football program of Temple. Reid glossed over Rhule year after year, despite the fact that Reid's own son, who himself had an opportunity to work with Rhule at Temple, kept on telling his dad how outstanding Rhule was as a coach.

“My son just kept saying, ‘This guy is an unbelievable football coach,'” Reid said. “‘He’s just so smart. He knows both sides of the ball. He can coach anything. I’m just telling you, he’s a star down the road.’ At the time I had a good staff and I didn’t have room to bring somebody in. There was no space, period.”

The Carolina Panthers hired Rhule during the offseason, and he has emerged as one of the top young coaches in the league. Reid and the Chiefs get to face off against Rhule and his Panthers on Sunday, and the latter might just remind Reid what he's missing.