MLS 2026: San Diego Expansion, the Messi Effect, and the League's Next Growth Chapter

Major League Soccer enters 2026 with 30 clubs for the first time in its history, following San Diego FC's inaugural match at Snapdragon Stadium on February 22. The expansion brings MLS to 30 markets and matches the NHL's count, signaling the soccer league's arrival as a fourth-tier American professional sport by team count. San Diego's season-ticket base of 26,000 makes it the third-largest inaugural supporter group in league history, behind Los Angeles FC and Miami.

San Diego FC's debut follows Charlotte FC's 2022 launch and St. Louis City SC's 2023 arrival. The league's commercial growth since then — driven heavily by Lionel Messi's 2023 arrival at Inter Miami — has allowed MLS to charge expansion fees exceeding $500 million per franchise, according to Sportico valuations.

San Diego FC Structure

San Diego FC's ownership group is led by billionaire Egyptian-American businessman Mohamed Mansour, alongside minority investors including San Diego-based tech executive Ron Burkle. The club's founding general manager Tyler Heaps, formerly of U.S. Soccer, has prioritized U.S. national team pathway players.

The club's opening roster included Mexican forward Chucky Lozano on a three-year designated-player contract worth $10.5 million, USMNT midfielder Luca de la Torre from Celta Vigo on a $5.8 million deal, and Argentine goalkeeper Pablo Sisniega. The early lineup structure reflects MLS's modern template — a mix of veteran South American talent and U.S. international pathway players.

The Messi Effect, Three Years In

Lionel Messi's arrival at Inter Miami in July 2023 has had measurable and sustained effects on MLS commercial performance. The league's Apple TV+ subscription numbers rose 17 percent in the first month of his signing, and MLS Season Pass subscriptions currently stand at 4.2 million globally, per Apple's Q4 2025 investor disclosure.

Messi's contract runs through December 2026, with a reported $30 million base salary plus equity stakes in Inter Miami Futbol Club and Adidas merchandise revenue. The 38-year-old has indicated he will retire after the 2026 World Cup, potentially co-hosted by the United States, Canada and Mexico. MLS has not publicly addressed succession planning for its marketing.

Expansion Economics

MLS expansion franchises now command fees three times higher than the $325 million average of 2020-era expansion. The San Diego franchise fee was $500 million, and Las Vegas — expected to join the league in 2028 — has been valued at $550 million in preliminary negotiations. A recent Sportico study valued the league's median franchise at $700 million, an increase of 45 percent year-on-year.

The economic surge reflects several factors: Messi's impact on viewership, the 2022 Apple TV+ media rights deal worth $2.5 billion over 10 years, and the 2026 World Cup's anticipated branding effects. Growth has not been uniform across clubs — the FC Cincinnati and Austin FC franchises have grown their enterprise value at higher rates than older clubs like Chicago Fire and Colorado Rapids.

Young American Talent

The league has increasingly become a developmental platform for U.S. national team players. 17-year-old Cavan Sullivan signed with the Philadelphia Union in 2024 and has been widely discussed as a future Premier League-level talent. Sullivan's contract contains a $4 million release clause for international buyers, significantly below the $28 million fees commanded for players at comparable talent levels in Mexico's Liga MX.

Liverpool signed U.S. international Weston McKennie from Inter Miami in January 2026 for $12 million, the highest transfer fee ever paid for an MLS player. The transaction included sell-on clauses worth up to an additional $3 million if McKennie is subsequently transferred.

2026 World Cup Integration

The 2026 FIFA World Cup, co-hosted by the United States, Canada and Mexico, will see 104 matches played across 16 host cities. MLS stadiums serving as venues include Inter Miami's Chase Stadium, Atlanta United's Mercedes-Benz Stadium (shared with the NFL's Falcons), Seattle Sounders' Lumen Field (NFL Seahawks), and Toronto FC's BMO Field (Canadian Football League Argonauts).

The World Cup's integration with the MLS season has required a schedule adjustment. The league will shorten the regular season by two matches to accommodate the June 11 to July 19 tournament window, with teams playing 32 matches instead of the usual 34.

League-Wide Financial Status

The league's collective revenue reached $2.1 billion in 2025, a 16 percent year-on-year increase, per MLS financial filings. Apple TV+ subscription revenue contributed roughly $275 million, with additional income from sponsorships, ticket revenue and club-specific media rights.

Only 13 of the 30 MLS clubs are profitable, according to a Sportico analysis published in February. The league's front office, led by commissioner Don Garber, has publicly emphasized that expansion and growth targets remain focused on reaching 34 clubs by 2032.