He is on the books of Concarneau and wears shirt number 20. His main role on the pitch is Forward. His estimated market valuation currently stands at 150K €.

His latest transfer saw him join Concarneau from Stade Briochin via Free on 2026-01-24.

During the French Championnat National 2025-2026 campaign, Mathéo Ntumi made 19 appearances, scoring 0 goals and adding 1 assists. He averaged 0 goals per match from 11 shots, with 3 on target.