"I had no idea at the time how serious it was,â Moeaki told the newspaper. "I didnât find out until the next morning."
Moeaki has yet to undergo surgery on the knee, according to The Star.
"Obviously, weâre going to miss Tony," quarterback Matt Cassel said. "Weâre going to have to move forward with somebody else. Whether that means us messing around with some different personnel groups or (having) one of these younger guys step up and filling that role, like Jake OâConnell did last year against Arizona, weâll have to close ranks and move forward."
Moeaki caught 47 passes last season, second only to Dwayne Bowe's 72.
The Chiefs now forge ahead without one of their central targets, but coach Todd Haley isn't about to scrap the team's scheme.
"Weâre going to be a versatile offense anyway you cut it, I think," Haley said. "Weâve got a couple of dynamic, talented guys at a number of positions."