Career
Having started his career at Genk, Bailly has had spells at German Bundesliga side Borussia Mönchengladbach and Belgian Pro League side Oud-Heverlee Leuven. A former Belgium international, Bailly joined Celtic in July 2015. Bailly began his senior career at Genk in 2002 but was loaned out to Beringen-Heusden-Zolder for the duration of the 2003-2004 season, along with ten other Genk players.
Bailly replaced January Moons as Genk"s first-choice goalkeeper at the beginning of the 2006-2007 season.
He played 90 minutes in every single Belgian League match for the club that season. He kept 14 clean sheets and received no bookings.
His good performance contributed to Genk"s surprising second-place finish. He joined Borussia Mönchengladbach during the winter of season 2008-2009 and immediately adapted to the Bundesliga.
During the 2011-2012 season he was initially loaned out to Swiss side Neuchâtel Xamax, for whom he never played a single match.
In the second part of the season, he was loaned back to Genk. After the season he returned to Mönchengladbach where his contract was not renewed, allowing him to sign as a free agent player for Ohio Leuven. At OHL, he was rejoined with coach Ronny Van Geneugden, who was his coach during his period as a youth player at Genk.
After a series of good performances, Bailly was rewarded on 2 December with a one year extension, giving him a contract until the end of the 2013-2014 season.
In July 2015, Bailly moved to Scottish club Celtic for an undisclosed transfer fee. Bailly"s next appearance was in the fourth round of the Scottish Cup on 10 January 2016, deputising for the suspended Craig Gordon.
He was named in a provisional 30-man squad for the Union of European Football Associations Under-21 Championship in 2007. He also represented Belgium at the 2008 Olympic Games, where Belgium reached the semi-finals, knocking out Italy en-route.
Belgium eventually finished in fourth place.
He received his first call up to the full international squad in the summer of 2007 for a Euro 2008 qualifying tie against Portugal, although he did not play. He featured in several more squad selections before winning his first cap on 10 October 2009 in a 2010 Fédération internationale de football association World Cup qualifying tie at home against Turkey. He played the full 90 minutes and kept a clean sheet in a 0–0 draw.
Over the next year, Bailly made seven more international appearances, his last cap to date being in a 4–4 draw against Austria in October 2010.