Here's a link to an article on this subject.
The policy was changed or removed in June 2020 - just days after this incident.
A chokehold, the manual states, is a "deadly force option," which the police department defines as "applying direct pressure on a person's trachea or airway." A neck restraint is a "non-deadly force option" defined as "compressing one or both sides of a person's neck with an arm or leg, without applying direct pressure to the trachea or airway."
The training manual, issued to all new officers, also features an image of how to execute the neck restraint. "Ok they are in handcuffs now what," the title above the image states. The department warns that "sudden cardiac arrest typically occurs immediately following a violent struggle." It also advises officers to "place the subject in the recovery position to alleviate positional asphyxia" and encourages officers to call emergency services once the suspect is in handcuffs.
The Minneapolis Police Department trained its officers to use the neck restraint that led to George Floyd's killing, according to court documents
https://twitter.com/b_stahl/status/1280913421161168897?