Complex sentence: Gray rejoined Plymouth for a second loan spell in September 2009, featuring regularly once again, making 12 league appearances for the club before returning to Old Trafford in December 2009 at the end of his loan agreement.
Split into simpler sentences: Gray rejoined Plymouth Argyle for a second loan spell in September 2009. He featured regularly once again, making 12 league appearances for the Pilgrims before returning to Old Trafford in December 2009 at the end of his loan agreement.