Cox's career started back in 1990 when he played for his hometown team of Scunthorpe United. He then went and signed for Aston Villa in a £400k move then made three other big moves to Middlesborough (£1m), Bolton (£1.5m) and Watford (£500k) where he made the most appearances for the Hornets.
Cox who signed for the Railwaymen back in 2006 from Cardiff City has made over 50 apperances playing as a central defender and as a defensive midfielder.
Cox told the office site CreweAlex.net: 'I want to spend a bit more time with my wife and my two daughters and see what might materialise in the future. I'm sure I will return to the game in some capacity in the future, but at the moment I want to concentrate on the remainder of this season and then if anything interesting comes up.
'I've had a great career but as a professional footballer you have to make sacrifices when it comes to your family life, especially when it comes to Christmas, Easter and the holiday period.'