Major League Soccer says it is investigating allegations of tampering by Inter Miami after the club completed the signing of Brazil midfielder Casemiro, one of the most decorated players in world football.

"The league is gathering all relevant information and will refrain from further comment until the review is complete." — Major League Soccer

Miami announced the 34-year-old, who left Manchester United at the end of last season, had signed a deal running to the end of the 2027 MLS campaign with an option to extend to June 2029. Moments later the league said it was 'reviewing a tampering allegation' connected to the move.

The investigation centres on MLS's discovery system, a regulation that grants a specific club first refusal over a player it wishes to sign. Los Angeles Galaxy held Casemiro's discovery rights, and Miami said it had acquired them from the Galaxy. The Galaxy confirmed a settlement over those priority rights, but said the terms would be released only once the tampering review concludes.

Casemiro won five Champions League titles with Real Madrid before moving to United in 2022, and he represented Brazil at this summer's World Cup, where they reached the last 16. He made 160 appearances for United, scoring 26 goals and providing 14 assists, and won an EFL Cup and an FA Cup. 'What motivates me the most is winning and continuing to grow,' he said on joining Miami.

United, in turn, have prioritised midfield reinforcements, signing Andrey Santos from Chelsea for £50m and Youri Tielemans from Aston Villa for £35m. Co-owner David Beckham called Casemiro 'a winner who has achieved so much', but until the league closes its inquiry the celebration in Miami is shadowed by a process that could yet reshape the terms of the deal.

Beyond the result, the contest will be assessed for what it reveals about form, fitness, and the margins that separate the very best when the stakes are highest.

The wider calendar now comes into focus, with coaches and analysts already projecting how this performance shapes the narrative heading into the next fixture.

In the dressing room, the mood swings between relief and resolve, the kind that follows a result that could have gone either way until the final moments.

Rivals will have noted the vulnerabilities exposed under pressure, filing them away for the rematches that the season's structure all but guarantees.

For the supporters, the performance offered a glimpse of an identity still forming, uneven yet unmistakably pointed in a direction worth following.