He currently plays for FC Nacional Asuncion, wearing the number 10 shirt. He plays primarily as a Forward. His current market value is estimated at 350K .

His most recent move was a Loan from Olimpia Asuncion to FC Nacional Asuncion on 2024-12-31.

In the Paraguayan Primera Division 2026 season, Carlos Arrua scored 0 goals and provided 0 assists across 2 appearances, averaging 0 goals per game with 0 shots attempted and 0 on target.