The agreement runs until the summer of 2027. Inter Miami co-owner and football icon David Beckham is pleased with his new signing.
"He is a winner who has achieved a lot in the sport and after an incredible career with Real Madrid and Manchester United, I am delighted that he has decided to make Miami his next home," Beckham told the club's website.
Casemiro is best known for his 336 appearances for Real Madrid, where he won the Champions League five times.
The midfielder has been capped 91 times by Brazil's national team. He played in every match at the World Cup before the team was eliminated by Norway in the round of 16.
