Tayo Edun has completed a permanent move to fellow Sky Bet League One side Peterborough United.
The defender, who joined the club from Blackburn Rovers in July 2023, made 37 appearances for the Addicks across all competitions, scoring once.
Technical Director Andy Scott said: “This is a move that works for all parties and allows Tayo to hopefully go and play regular first-team football. We would like to thank Tayo for his efforts at Charlton and wish him all the best for the future.”