Barnsley have signed former Manchester United defender Reece Brown from Watford for an undisclosed fee
Hull City defender Joe Dudgeon has expressed his delight after joining League One Barnsley on a month's loan deal.
Leyton Orient have announced the signing of forward Jay Simpson on a three-year deal.
Defender Tom Kennedy has left Barnsley by mutual consent, but young midfielder Brad Abbott has signed a new Tykes deal.
Crewe have bolstered their attacking options with the signing of striker Marcus Haber on a two-year deal.