Barnsley have signed right-back Callum Brittain from MK Dons.
The 22-year-old joins the Reds on a three-year contract for an undisclosed fee.
He came through the League One club's academy and has played 122 games. He was released in the summer of this year due to financial problems caused by Covid but then resigned on a two-year deal.
Brittain will replace Kilian Ludewig whose loan was cancelled earlier in the week.