I honestly can't come up with a single current NBA coach who I think needs to retire. For that reason, this is perhaps the toughest assignment I've ever taken on here at Bleacher Report.
Usually when you think of someone who needs to retire, it's a person who is past his prime and therefor hindering the success of whoever he's working for.
There really aren't many coaches in that category, so I'll have to come up with some more creative reasons why these guys should retire...
Andy Bailey is on Twitter. Follow @_Andy_Bailey