Health, here is the report by CBS News:
“George Floyd, the Minnesota man who died after an officer arresting him pressed his knee onto his neck, died by homicide, according to the results of two autopsies released on Monday — one by the county medical examiner and the other by independent pathologists commissioned by Floyd’s family. But the two autopsy reports differed on exactly how the man died.
Dr. Allecia Wilson, one of the pathologists who conducted the independent autopsy, said Monday afternoon that Floyd died as a result of mechanical asphyxiation.
But the report released later Monday by the Hennepin County Medical Examiner’s office said Floyd died of ‘cardiopulmonary arrest complicating law enforcement subdual, restraint and neck compression.'”
Moreover, Chauvin and Floyd worked together as bouncers. How well he knew him is not yet known. In any case, even he did not know about Floyd’s medical issues if a healthy person would have died from it it would not make a difference. If it can be proven that Chauvin had some personal grudge against Floyd the prosecution might just be able to get him on an even more serious charge. Maybe even murder one. You can google “What is premeditated and deliberate conduct?” on Nolo.