Caris LeVert suffered a serious right leg injury in the first half of Monday's game between the Brooklyn Nets and Minnesota Timberwolves.
LeVert was taken immediately to a local hospital for further evaluation.
LeVert came down hard on his right leg after colliding with Jeff Teague on an attempted chase-down block.
LeVert had injuries in college that ended his junior and senior seasons.
"There was really just no words," Joe Harris said after the game. "We didn't talk even when we came in at halftime. There was nothing to be said. Guys were crying. It was really that horrific just to see."