Detlef Esapa Osong (born 21 September 2004) is an English professional footballer who plays as a forward for Fleetwood Town on loan from Premier League club Nottingham Forest.
Osong joined Nottingham Forest as a youth in 2017 from grassroots football in Leicestershire, and worked his way up their youth sides. He had a prolific start with the club's U18s in the 2022âÂÂ23 season, scoring 12 goals in 20 appearances. He signed his first professional contract with the club on 6 January 2022.
On 1 February 2023, Osong made his professional and senior debut with Nottingham Forest in a 2âÂÂ0 EFL Cup loss to Manchester United.
On 18 July 2024, Osong was loaned to EFL League One side Rotherham United for the 2024âÂÂ25 season. He was recalled on 2 January 2025, having played 10 times in all competitions. Later that month he signed on loan for Cambridge United.
On 15 August 2025, Osong moved on loan to Scottish Premier League side Motherwell for their 2025âÂÂ26 season. On 19 January 2026, Motherwell announced that Osong had returned to Nottingham Forest after his loan deal was ended early.
On 2 February 2026, Osong joined League Two club Fleetwood Town on loan for the remainder of the 2025âÂÂ26 season.