Barnsley have sold captain Cauley Woodrow to Luton Town for an undisclosed fee.
The 27-year-old striker scored 53 goals in 157 games for the Reds across four years, and is their top-scorer in the 21st century.
He had one year left on his contract but joins the Championship Hatters, where he began his career, after Barnsley were relegated to League One.
Woodrow told the club website: "“There has been ups and downs, but this football club, fan base, players and staff will be in my heart forever. I can’t thank everyone enough for their effort and support over the years
and I have loved every minute of playing for Barnsley. Promotion, surviving on the last day, Championship Play-Offs and the hard season of relegation that we had last year, I feel like I’ve experienced it all with you. This football
club belongs in the Championship and I am sure that time will come again soon.
“For me, it’s time to move on but to both represent and captain this football club was an honour. Thank you to everyone and I will see you all again soon."
Woodrow joined the Reds in 2018 and helped them to automatic promotion from League One in his first season. He was joint top-scorer in all competitions that campaign with Kieffer Moore before taking the accolade on his own in the next two seasons as Barnsley stayed in the Championship in the final seconds in 2020 then reached the play-offs a year later but lost to Swansea City.
Last season, he netted just four goals in a team that would be relegated, and missed four months with a serious ankle injury which required surgery. He returned for final six matches of last season.
His departure is the first of several expected sales of first team regulars as the Reds look to offset the cost of dropping out of the Championship.
Woodrow was one of the top earners at Oakwell, although the amount Barnsley receive in a transfer fee is expected to be shared with his previous club Fulham who are understood to have a significant sell-on clause.