Kyle Glover, 11, was reported to be in critical condition after a ski collision in a Georgia lake on Saturday (July 7).
Glover and an unidentified 15-year-old girl were sitting in an inner tube being pulled by a boat, when they were hit by a jet ski being driven by a 38-year-old man.
Sources tell TMZ that Glover has showed no brain activity since he was rushed to Egelston Hospital in Atlanta.
There has reportedly been no decision as yet on whether or not to remove the child from life support.
Glover is the son of Usher's estranged wife Tameka Foster, with whom he has been in an ongoing court battle.