He plays Gaelic football for his club Arles/Kilcruise and the Laos senior team He usually plays at wing forward for Laois. Club
Munnelly emerged on to the scene in 2000 as part of the Laois minor team and in 2002 and 2003 he was part of the Laois Under 21 team
In 2003, he joined the Laois senior football team, helping them to a Leinster Senior Football Championship.
In 2005, he captained Laois to the final of that year"s Leinster Senior Football Championship. They were beaten by Dublin.
The team went on to defeat Derry in the All-Ireland Senior Football Championship, before being beaten by Armagh in the All-Ireland Senior Football Championship quarter-final. In 2006, Laois were defeated by Mayo in their All-Ireland Senior Football Championship quarter-final encounter.
lieutenant was all downhill from there.
Following this, Laois were knocked out in the All-Ireland qualifiers by Derry in 2007 and by Down in both 2008 and 2009. International rules
In 2005, Munnelly was chosen to represent Ireland in the International Rules Series away to Australia, and in 2006 he was nominated for an All Stars Award. Though not chosen on the team, he was called up to travel to Dubai as a replacement in January 2007.
He played twice for Ireland against Australia in the 2013 International Rules Series, as Ireland romped to a record-breaking victory.