Nashville was one of the cities that submitted bids for the 2017-2020 years, but wasn't chosen due to them only bidding for one specific year instead of all four. IIRC, it was for the 2019 date, because they already have commitments for the arena during the other years. Bidding for any of the four years is the way to go apparently.
It needs to come back to Nashville. We have the infrastructure to support the Final Four, and it's amazing how much the city, especially the downtown area, has changed since 2014. Be prepared however, because hotel prices are currently on par, and higher, than NYC.
I would expect Minneapolis, due to the Lynx popularity, to be awarded as well.