Charlie Kirk joined Charlton in August 2021 from Crewe Alexandra for an undisclosed fee.
A product of Crewe's youth academy, the Winsford-born winger made his first-team debut in 2016 at the age of 19.
Kirk would go on to play 206 games for the Railwaymen in all competitions, scoring 32 goals and registering 31 assists.
The wideman made 14 appearances for the Addicks before joining Championship side Blackpool on loan for the remainder of the 2021/22 campaign in January.
In January 2023, he completed a loan move to Burton Albion until the end of the season.