Defender leaves Oakwell on a permanent basis for an undisclosed fee.
Barnsley Football Club can confirm that 22-year-old Jason McCarthy has today joined Sky Bet League One side Wycombe Wanderers on permanent deal, with the Reds retaining an interest in his future.
The defender played 24 matches for the Reds across all competitions during the 2017/18 season with his last start coming January away at Aston Villa, and will now join The Chairboys on a three-year-deal.
McCarthy will be linking back up with former manager Gareth Ainsworth at Adams Park, where he played 39 matches during a loan spell in the 2015/16 season.
Jason leaves with the best wishes of everyone at Barnsley Football Club, where has been a true professional both on and off the pitch and we would like to wish him the best of luck for the future.
Chief Executive Gauthier Ganaye commented: “Jason leaves with all of our best wishes having shown a great attitude towards the club and fanbase in his time here. Daniel [Stendel] and his coaching staff feel we are strong in the right-back position, therefore we have allowed Jason to leave in search of first team football. We’ve agreed a deal that will benefit all parties and wish him the best of luck at Wycombe.”