Parsons is recognised as a promising midfielder. He broke onto the Mayo senior team in 2008, giving what was described as an 'inspirational' display against Sligo in the Connacht Senior Football Championship semi-final. He also performed well against eventual winners Galway in the Connacht final. Mayo were knocked out of the championship by Tyrone in the last round of the qualifiers
He was selected in the Ireland squad to play in the 2008 International Rules series against Australia. There was some speculation that Parsons might consider signing a contract with an Australian Football League club, but he said that he had no interest in playing Australian Rules.