What are some NFL worst off-seasons of all time?

With the Minnesota Vikings losing JJ McCarthy for the entire season, their 3rd overall selection in Khyree Jackson tragically passing away, Jordan Addison facing suspension, and MANY starters/rotational players being injured before the season even begins, this is easily the worst offseason for the Minnesota Vikings in their franchise’s history. But what are some other NFL franchises that have had absolutely terrible offseasons? Do any top the Vikings?