Dundee United will release Keith Watson, Michael Gardyne and Brian Graham at the end of the season.
Defender Watson joined United in 2006 and made 123 appearances for the club, but was out of favour this season and spent the last half of the campaign on loan at Scottish Championship outfit Hibernian.
Gardyne has been on loan at Ross County this season while Graham has scored eight goals on loan at Tayside rivals St Johnstone.
United are currently fifth in the Scottish Premiership table, with five games remaining.
