MIAMI — Inter Miami confirmed the signing of Brazilian midfielder Casemiro on Friday, one day after the transfer was completed. The LA Galaxy raised tampering allegations over the club's pursuit of the former Manchester United player, and Major League Soccer said it would review the complaint.

Casemiro, 34, joins a Miami side built around Lionel Messi, Sergio Busquets and Jordi Alba. The midfielder strengthens the spine of manager Javier Mascherano's squad ahead of the second half of the MLS season, adding Champions League and World Cup experience to a midfield already anchored by Busquets.

The LA Galaxy released an official statement on Thursday alleging improper contact during the negotiation process. MLS confirmed it had received the complaint and said any inquiry would follow the league's standard disciplinary procedures. Inter Miami has denied wrongdoing.

An Inter Miami spokesperson said the club welcomed the review and expressed confidence that the transfer complied with league regulations. The signing continues Miami's strategy of recruiting high-profile European talent to raise the league's global profile, with Casemiro available for immediate selection.