Scotland international Allan Campbell joined the Addicks in August 2024, arriving on a season-long loan from Luton Town.
The Glasgow-born midfielder joined Motherwell aged 10 and progressed through the youth ranks to make 160 appearances for the Scottish top-flight outfit.
In June 2021, Campbell signed for Luton - then managed by Nathan Jones - and helped the Hatters qualify for the Sky Bet Championship play-offs in his debut season before winning promotion to the Premier League in his second campaign, missing just four league fixtures.
The Scot made his senior international debut in June 2022, coming on as a substitute in a 4-1 victory against Armenia.
Having spent the 2023/24 campaign on loan at Millwall, he now reunites with Jones for the second time in his career.