According to Forbes, three of the four most valuable sports franchises in the world are Manchester United ($4.123 billion), Real Madrid ($4.088 billion) and Barcelona ($4.064 billion) with NFL's Dallas Cowboys being
Dallas Cowboys, NFL Team Valuations - Forbes.com
Cowboys, Patriots, Giants Top Forbes' 2018 Most Valuable NFL Franchises List, News, Scores, Highlights, Stats, and Rumors
NFL franchise value by team 2023
Ranked: The Most Valuable NFL Teams in 2022
NFL-Cowboys retain title of NFL's most valuable team - Forbes
Forbes - Cowboys again most valuable NFL team, at $5.7 billion - ESPN
ESPN - The most valuable sports teams in the world
The NFL's Most Valuable Teams (And Why They're Worth So Damn Much)
Dallas Cowboys Lead NFL With $2.1 Billion Valuation
Cowboys retain title of NFL's most valuable team – Forbes
NFL Team Values 2022: Dallas Cowboys Are The First Franchise Worth $8 Billion
NFL team values: Dallas Cowboys lead Forbes' 2018 valuations rankings
Dallas Cowboys top Forbes' most valuable NFL franchises for 15th consecutive year