FC Nordsjælland Osman joined Danish side
Nordsjælland in early 2023 from the
Right to Dream Academy in Ghana. He made his debut in February 2023, coming on as a substitute for compatriot
Ernest Nuamah in a 4–2 win over
OB.
Brighton & Hove Albion On 10 February 2024, it was announced that Osman would sign a five-year contract with
Premier League club
Brighton & Hove Albion. The Seagulls paid a reported £16 million transfer fee.
Feyenoord (loan) On 15 August 2024, Osman joined
Eredivisie club
Feyenoord on a season-long loan.
Auxerre (loan) Osman joined
Ligue 1 club
Auxerre on 8 July 2025 on a one-year loan deal.
Birmingham City (loan) On 19 January 2026, Osman was recalled from his loan at
Auxerre and signed on loan for the remainder of the season at
EFL Championship club
Birmingham City. ==Career statistics==