Born in France, Tony was a product of the Monaco youth system. He started out his professional career at Stade Nyonnais in 2009 and became a first team regular before making the move to Scotland in 2012. In June that year he signed for Livingston where he spent a single season before stepping up a level with Hamilton Accies. In his two years at Hamilton he played over fifty times and scored close to a goal every two games. Tony was nominated for the 2013/14 PFA Championship Player of the Year and selected to the team of the year that same season. He helped Hamilton to promotion during his time there.
His great form at Accies earned Tony a big move to Norwich City in February 2015 and while with the Canaries he was loaned out to Rotherham United. On transfer deadline day in 2016, Tony made another loan move, this time to Tannadice on a year long deal.