Date of birth
McCullough is a Northern Ireland international who was part of the side which made the European Championship round of16 in France during the summer of 2016.
McCullough joined Rovers from Premier League side Manchester United in the summer of 2013 and made 15 appearances for Rovers in his debut season.
He established himself in the first team and has been deployed in a number of positions including centre back, right back and more latterly central midfield.
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