HE KNOWS BETTER TMZ.com
Ja Morant might not care if he gets punished for his gun-themed celebrations ... but one former NBA great is pleading with the Memphis Grizzlies star to leave the safety on his controversial gesture -- telling TMZ Sports he's "ruining his career."
We spoke with Spencer Haywood out at LAX shortly after 25-year-old Morant was fined for his on-court antics ... and he had a strong message for the two-time All-Star and his inner circle.
"The people that are around him are not advising him right," Haywood said.