NBA Legend Jerry Sloan 'Is Dying,' Dementia and Parkinson's Worsening

Friends of legendary Utah Jazz coach Jerry Sloan -- who has been battling dementia and Parkinson's disease -- are asking for prayers with one close friend saying, "He is dying."

77-year-old Sloan revealed his battle with the diseases back in 2016 after the symptoms became noticeable. According to the Salt Lake Tribune's Gordon Monson, things have gotten much worse recently ... with one source who's close to Jerry telling the reporter he doesn't have much time left. 

"He’s frail. He’s physically and mentally limited. Around the clock care is required for him," Monson says in his report. 

Despite his worsening condition, Sloan is still social with his friends ... but as Monson notes, "His mind, though, is slipping away."

Sloan's wife, Tammy, has been caring for Jerry -- "doing whatever she can to help her man, spending time and sharing love with him as much as possible."

Monson is asking fans to "send a prayer up" for Sloan -- while noting he's physically incapable of attending another Utah Jazz game. 

Sloan is widely considered one of the greatest coaches of all time -- he spent 23 seasons leading the Utah Jazz ... and brought them to the NBA Finals twice in the '90s.