FootballDerry must develop new culture to succeed warns Rory GallagherBy The NewsroomPublished 10th Jan 2020, 08:00 BST Derry manager Rory Gallagher (INPHO/Evan Logan)Rory Gallagher has warned his Derry players they must develop a new culture in order to be successful in the modern county game.Related topics:Rory GallagherDerry