He currently plays for Club Sportivo 2 de Mayo, wearing the number 2 shirt. He plays primarily as a Defender. His current market value is estimated at 250K €.

His most recent move was a from Free player to Club Sportivo 2 de Mayo on 2022-01-01.

Throughout the Paraguayan Primera Division 2026, M. Barreto featured in 5 matches, averaging 1.8 tackles, 0.4 interceptions, and 5.4 clearances per game, while blocking 0.2 shots per game.