nikka hopped on them meek mill bikes and fukked his shoulder upA couple theories I heard that seem plausible.
shytty weight lifting. If you saw any of his off-season workout video's it was amazing how he did literally ever single weight lifting exercise with horrible form. Like a dude who had never lifted weights in his life. If you look up muscle imbalance it's almost synonymous with poor weightlifting exercises.
Another theory is that dude hurt his shoulder on the recoil of a dirt bike. Apparently dude is a big biker. Can't admit to it cause of the CBA your not really suppose to be doing that type of shyt in the offseason.
Last theory is that it was all mental and dude is fragile. I think that theory is kind of in the bushes. The doctor who diagnosed him would have to be making shyt up just to justify him missing time. Not sure a doctor who deals with multiple high level clientele is gonna potentially toss that shyt in the bushes to try to keep some rookie basketball player from looking like a nutcase.