I’m not aware of any information about an individual named Keith Hackett being associated with Rangers or any other football club. However, I can provide some general information about Keith Hackett.
Keith Hackett is a former English football referee who officiated in the Football League and Premier League from 1976 to 1994. He was also a FIFA referee from 1981 to 1991.
If you’re referring to a different Keith Hackett or a specific incident, could you provide more context or clarify what you’re looking for? I’ll do my best to provide a helpful response.