He is on the books of FC Nacional Asuncion and wears shirt number 10. His main role on the pitch is Forward. His stronger foot is Right. His estimated market valuation currently stands at 300K €.

His latest transfer saw him join FC Nacional Asuncion from Olimpia Asuncion via Loan on 2024-12-31.

During the Paraguayan Primera Division 2026 campaign, Carlos Arrua made 2 appearances, scoring 0 goals and adding 0 assists. He averaged 0 goals per match from 0 shots, with 0 on target.