First-round bids for the Super Bowl champion Seattle Seahawks were due Monday, setting the stage for what could be the most expensive sale of an NFL franchise yet. The team's potential valuation underscores the soaring economics of professional football.

The sale represents a rare opportunity in a league where teams seldom change hands. Bloomberg's Randall Williams noted that the Seahawks' recent championship run adds significant premium to an already lucrative asset.

While the exact bid amounts remain confidential, industry observers expect offers to exceed the record $6.05 billion paid for the Denver Broncos in 2022. The Seahawks' strong brand and Seattle market make it a premier investment.

A new owner will inherit a cap-strapped roster and aging star players, challenges that could temper near-term returns. The winning bidder will also navigate Seattle's complex stadium lease and local tax dynamics.

Some analysts caution that media rights uncertainty and rising interest rates may dampen final bids compared to early estimates. The sales process could extend for weeks.