Central defender Stephen Foster has had his contract with Tranmere Rovers cancelled by mutual consent.
Barnsley have confirmed the players they will retain at Oakwell and those that will be released from the Yorkshire club.
Barnsley defender Stephen Foster is hopeful the club can fire themselves up the Championship table.
Stephen Foster is hoping Barnsley can keep more clean sheets to continue their climb up the table.
Barnsley duo Stephen Foster and Luke Potter have signed new deals, but Jay Rodriguez is to return to Burnley.
Barnsley's Stephen Foster has agreed a contract extension which will keep him at Oakwell until 2010.
Simon Davey admitted his side's run to the FA Cup semi-finals contributed to their slide down the Championship.
Barnsley and Cardiff will put league matters to one side as they battle it out for a fairytale FA Cup final appearance.
Barnsley defender Stephen Foster will miss the club's FA Cup semi-final due to a foot injury.
Brian Howard's last-gasp goal earned Barnsley a famous 2-1 win over Liverpool to dump Rafa Benitez's side out of the competition.