MLS faces bigger test than star signings after World Cup

Major League Soccer has emerged from the World Cup with rare momentum, but the league’s next step may depend on more than headline-grabbing arrivals. Casemiro’s move to Inter Miami is the latest statement of intent, yet Sebastian Berhalter’s departure for Middlesbrough offers a reminder of the more complicated task facing MLS: persuading the best young American-based players that their future can remain at home.

Casemiro gives Inter Miami another marquee moment

Inter Miami presented Casemiro with the kind of fanfare reserved for a global name. The MLS Cup holders unveiled their new No 5 in front of season-ticket holders, with the club branding the event as The Arrival. It was another polished showcase for a player whose career has carried enormous weight in the modern game.

Casemiro arrives in Miami as a World Cup player, a former Brazil captain and a five-time Champions League winner with Real Madrid, having also built a strong profile at Manchester United. In his first remarks around the move, he said he wanted to contribute not only to Inter Miami but also to the wider growth of the league and football in the United States.

That ambition fits neatly with MLS’s current pitch to supporters: the World Cup has elevated the sport’s visibility, and the domestic league wants to carry that energy forward. Casemiro’s signing certainly helps sustain attention.

The timing also exposed a wider reality

There was, however, an awkward contrast to the celebration in Miami. On the same day as Casemiro’s unveiling, Brazil manager Carlo Ancelotti brought the midfielder’s international career to a close. Ancelotti described the World Cup as the end of a generation for Brazil, naming Casemiro among the senior figures now making way for younger options.

That does not diminish Casemiro’s stature, but it sharpens the central question for MLS. Can the league truly build on World Cup momentum if so much of its marketing power still depends on stars entering the final phase of their careers?

The pattern is familiar. Inter Miami have already become a destination for elite names with long-established reputations, particularly around Leo Messi. Sergio Busquets has already finished his career there, while Luis Suárez and Jordi Alba are also in the latter stages. Casemiro now joins Rodrigo de Paul in Miami’s midfield.

MLS’s challenge is keeping emerging talent

If Casemiro represents one side of the league’s strategy, Berhalter represents the other side of its problem. The homegrown midfielder has left Vancouver Whitecaps for Middlesbrough, moving from an MLS title contender to the EFL Championship.

His exit may not carry the same global profile as Casemiro’s arrival, but it speaks directly to the league’s long-term health. MLS can generate excitement by importing decorated veterans, yet the more meaningful measure of progress may be whether rising domestic players see the competition as the best place to develop and stay.

That tension is now central to the league’s post-World Cup identity. Star signings can lift visibility, sell tickets and create moments. They can also leave MLS in a cycle where many of its most marketable faces belong to an older generation.

Big names matter, but they are not the whole answer

MLS has added more established international talent beyond Miami. Antoine Griezmann has joined Orlando, Robert Lewandowski has arrived in Chicago, while Son Heung-min at LAFC and Timo Werner at San Jose have made strong impressions in the western conference.

Those moves reinforce the league’s growing appeal and its ability to attract players with elite-level pedigree. Casemiro himself pointed to Messi’s presence in MLS as evidence that the competition should no longer be viewed as peripheral.

But if the World Cup gave MLS a platform unlike any it has previously enjoyed, the league’s real test is what comes next. Bringing in stars such as Casemiro can keep the spotlight burning. Turning that attention into lasting progress will require something harder: making MLS a league where the next Berhalter chooses to stay.