Maybe, you know how tough it is to be a great coach when you've been a great player, they always expect perfection, so it may work, or it may not.I can see him being a great quarterbacks coach.
If Brett did go somewhere else wouldn't it make sense to go where the coach runs the West Coast Offense? That way Brett would fit right in and run the same offense he has ran since 1992.
I don't think he should retire. He is still actually good, not like most players that keep holding on even though time has passed them by. Maybe one more season, because Aaron Rogers(I think that's his name) just isn't that good.