Education
He was educated at Saint Benildus College where he excelled on the sports fields.
He was educated at Saint Benildus College where he excelled on the sports fields.
Since retirement from the professional game he has worked as a pundit with RTÉ Sport. He began his career at youth level with Leicester Celtic and Belvedere before joining F.C. A striker, Sadlier scored 34 goals in 103 starts foreign
In an interview with the British Broadcasting Corporation, Mark McGhee named Sadlier as potentially the best young centre forward he had ever worked with in his managerial career. In 2003, Sadlier retired from the professional game due to a hip injury at the age of 24.
Sadlier represented his country at the 1997 Union of European Football Associations European Under-18 Championship.
He scored in the third-place playoff against Spain. Sadlier"s only cap at senior level came against Russia in a friendly at Lansdowne Road on 13 February 2002. In 2007, Sadlier was appointed to the board of Street Patrick"s Athletic F.C.
He resigned from his post at Street Patrick"s at the end of the 2009 season.
In 2006, Sadlier was approached to write a column for the Sunday Independent after previously doing some punditry work with Setanta Sports, he also contributes regularly to Newstalk. In 2008, Sadlier joined RTÉ"s panel of pundits for its League of Ireland coverage, dominated by Monday Night Soccer.
He later contributed to RTÉ Sport"s coverage of the 2010 Fédération internationale de football association World Cup. He became a panellist on RTÉ Two"s Premier Soccer Saturday, and covered the 2010-2011 Premier League.
In 2012, Sadlier was a studio analyst as part of RTÉ Sport"s coverage of Union of European Football Associations Euro 2012, and also appeared on Craig Doyle Live on 11 June 2012.
In June 2013, he was part of RTÉ Sport"s coverage of the 2013 Fédération internationale de football association Confederations Cup alongside Ronnie Whelan and Kenny Cunningham. He was also part of RTÉ Sport"s studio coverage of the 2014 Fédération internationale de football association World Cup. Sadlier has spoken publicly of suffering from depression, particularly following the death of fellow professional Gary Speed.