If memory serves, and its impossible to find any useful fucking information anymore on the topic, it was just basic police corruption shit. Taking money to help or look the other way on drug running and other criminal enterprises in the area. The kind of problem that is unfortunately super common in any police department.

Which would be dismissable as just more slandering among the many about him, but part of that discussion was that he knew Floyd from that crowd and had some prior associations with him, though nothing deep. As acknowledging Floyd was that much of a criminal was anathema to anyone out to tar Chauvin, it holds some weight.