Niall is a goalkeeper who grew up in France and came through the ranks at French club Stade Rennais. He signed for Alan Matthews at Shelbourne in January 2013 and made his debut for the Reds against Dundalk in an EA Cup tie on 11 March and his league bow also came against Dundalk, four days later. Niall made 11 league appearances for in 2013 but Shelbourne were relegated to the First Division at the end of the season and Niall left to join Luxembourg side FC Differdange 03 in February 2014.