Brittain sold as Barnsley trigger release clause
The defender makes move to the Championship
Callum Brittain has been told to Championship Barnsley after the Tykes met his release clause.
The 22-year-old signed a new contract with the club in the summer after being released as a free agent - a deal which included a release fee.
News of Brittain's departure comes just hours before kick-off at Fratton Park as Dons prepare to take on Portsmouth.
The defender made 122 appearances for the club since his debut in 2016.