Celtic are interested in bringing Phil Jagielka to the club with the defender now available on a free transfer, reports The Sun. The England international confirmed earlier this week that he would be leaving Everton when his contract expires at the end of the month. Jagielka joined the Toffees from Sheffield United in July 2007, going on to make 385 appearances for the club. Capped 40 times by England, the 36-year-old is now seeking pastures new and could be interested by the move north of the border. Celtic are on the lookout for defensive reinforcements with Filip Benkovic soon to return to his parent club Leicester City after a successful loan spell. Dedryck Boyata will move to Hertha Berlin in July leaving the Hoops short of specialist central defenders. The Sun claims that Celtic tried to sign Jagielka in January to boost their defensive options but Everton wanted to keep him at the club. However, with the centre-back now available and free to talk to whichever clubs he chooses, the Scottish champions can be expected to be lining up an approach. There may be competition for his signature with the report suggesting a return to Sheffield United could be on the cards. Jagielka has plenty to offer either club given his vast experience at Premier League and international level. He was Everton’s captain for six years and would be an excellent role model for younger players. If he opts for the Hoops, Jagielka would follow in the footsteps of several Englishmen to have signed for Celtic in the twilights of their careers including Dion Dublin and Ian Wright.