In 2014 Miller rejoined Rangers for a third spell with the Glasgow club .
Last season became club 's ' oldest ever player to score a hat - trick after scoring three goals in a 6 - 0 win over Dumbarton .
In 2014 Miller rejoined Rangers for a third spell with the Glasgow club and last season became their oldest ever player to score a hat - trick after scoring three goals in a 6 - 0 win over Dumbarton .