Ferenczi signed for Barnsley on 31 January 2007 – the transfer deadline day and incidentally the same week Barnsley captured fellow Hungarian Péter Rajczi. He made his Barnsley debut against Cardiff City on 2 February 2007 from the bench. Ferenczi scored his first goal in the game at Southampton when he headed home a Martin Devaney cross. In the following fixture against Hull City, Ferenczi scored a brace, the first he slid under the keeper after a defensive error and the second a bullet header from a Brian Howard cross. Ferenczi carried on his impressive scoring record as he scored a goal supplied by Péter Rajczi and beat Stoke City on 26 February 2007. This game was shown live on Sky Sports 1. He added his fifth goal in four starts on 3 March, after terrifically heading in a Martin Devaney cross. Although Barnsley lost 1–3 Oakwell against Norwich City in that match. He failed to hit the target against Sunderland the following Saturday as Barnsley lost 2–0, but scored a last minute clincher against Plymouth Argyle on 14 March in a terrific 4–2 away win. He was a big hit with the fans in South Yorkshire and gained the nickname Stan.
2007–2008
Ferenczi started the first game of the season against Coventry City and was tugged and pulled all over the place by Elliott Ward but had no favours given to him by the referee. Three days later in the Carling Cup he got off the mark for the season after coming off the bench by heading home Rob Kozluk's cross. He got off the mark in the League on 25 August in Barnsley's home game with Plymouth when he swept home Kayode Odejayi's low cross. He suffered an ankle injury against Cardiff at Oakwell and missed five weeks, but he returned with a bang with new strike partner Jon Macken and scored two goals in as many games against Preston and Blackpool, both headers from Brian Howard free kicks. He also played in the memorable victories over Premier League sides Liverpool and Chelsea in the 2007-08 FA Cup. In May 2008, Simon Davey transfer-listed Ferenczi along with four other players. Following initial interest from Nottingham Forest and an unnamed Swedish club, he signed a two-year contract for Ferencváros on 24 July 2008. Ferencváros are one of the highest rated clubs in Hungary and Stan wanted to play for them eventually.
2008–2009
Ferenczi had a remarkable return to his homeland, bagging 13 goals in the first seven games. As of 1 June 2009 he scored 39 goals in only 24 league matches.
