He is on the books of MSK Zilina and wears shirt number 7. His main role on the pitch is Forward. His estimated market valuation currently stands at 275K €.

His latest transfer saw him join MSK Zilina from MSK Zilina U19 via on 2024-06-30.

During the Slovak Nike liga 2025-2026 campaign, frantisek kosa made 12 appearances, scoring 2 goals and adding 0 assists. He averaged 0.2 goals per match from 9 shots, with 5 on target.