When Favre was with Green Bay he was never known as a prima donna and developed a reputation for being one of the greatest QBs of all time.
After Favre officially retired from Green Bay it has been one drama after another. Maybe Mike McCarthy deserves some credit for dealing with Bret and resolving their issues in private. Favre is still a great QB, but the Vikings are a very good team without him. They made the playoffs last year with a really terrible QB. It will be interesting to see if the Vikings have a late season collapse like the Jets did last year.
You’d better do little more research about Brett and Green Bay.